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Personalized Public Health in Africa: Balancing Disease, Privacy and Ancestry

January 09, 2024
  • 00:04OK. We're going to go ahead
  • 00:05and get started tonight.
  • 00:06Thank you so much for coming for joining us.
  • 00:09And for those who are dialed in on Zoom,
  • 00:12just a couple of quick housekeeping issues.
  • 00:14We have a terrific schedule for 2024,
  • 00:18which is available on the website.
  • 00:20Just if you just go biomedical ethics
  • 00:22at Yale, you'll find yourself,
  • 00:23you'll find pretty easily to get to
  • 00:26the program for Biomedical Ethics and
  • 00:27you'll see the schedule for the spring,
  • 00:29which looks very exciting.
  • 00:30But we wanted to finish off
  • 00:322023 on a high note.
  • 00:34And so I want to tell you a bit
  • 00:36about our speaker for this evening.
  • 00:37I just not too long ago met Steve
  • 00:40Schiff and was so excited to be
  • 00:42able to kind of bring him into our
  • 00:44bioethics community because, you know,
  • 00:46it's Yale's a pretty big place and there's
  • 00:47people around here that if you don't know.
  • 00:49And I see that, I see some student
  • 00:52bioethics leaders among us as well.
  • 00:54So when you're sometimes looking for members
  • 00:55of the faculty to address to students,
  • 00:57it's good to get to know these guys too.
  • 01:00Steve Schiff is a professor and
  • 01:01vice chair for Global Health in the
  • 01:03Department of Neurosurgery here at Yale.
  • 01:05But I should say he is professor,
  • 01:06but as of relatively recently,
  • 01:09he's also in fact the Harvey and Kate
  • 01:11Cushing Professor of Neurosurgery,
  • 01:13which is which is as they say, not nothing.
  • 01:16So this is a very important
  • 01:18endowed professorship.
  • 01:18So congratulations for that,
  • 01:21Steve.
  • 01:21He's a pediatric neurosurgeon with
  • 01:23interest in neural engineering,
  • 01:25Sustainable health engineering
  • 01:26and global health.
  • 01:27He received his NIH Directors
  • 01:29Pioneer and Transformative Awards
  • 01:31in 2015 and 2018 respectively.
  • 01:34The support enabled him to lead the
  • 01:37recent discovery and characterization
  • 01:39of neonatal panabesiliosis,
  • 01:41a new disease syndrome that is an
  • 01:44important 'cause of infant sepsis
  • 01:47and hydrocephalus in East Africa.
  • 01:49And that's a conversation you
  • 01:50and I need to have afterwards,
  • 01:52maybe at dinner because I need
  • 01:53to learn more about that.
  • 01:54I don't know nothing about that.
  • 01:55He's taught neuro ethics at the
  • 01:57undergraduate and graduate levels
  • 01:58and is deeply involved in the
  • 02:00ethics of ancestral genomics in
  • 02:02predictive personalized public health,
  • 02:04which is what we're going to
  • 02:05hear about tonight,
  • 02:05specifically those efforts in Africa.
  • 02:09Steve is largely a product
  • 02:11of Duke University.
  • 02:12He received his MD,
  • 02:13did his surgery residency there,
  • 02:15his neurosurgery residency there,
  • 02:17also received a PhD in Physiology
  • 02:19and then went to CHOP to train
  • 02:22in pediatric neurosurgery.
  • 02:23So Professor Steve Schiff,
  • 02:25we're so pleased you're here
  • 02:26and please join me in welcoming
  • 02:33most of you guys kind of know the drill.
  • 02:34So just to remind you and
  • 02:35those who are on the call,
  • 02:36there'll be a talk of about 45 minutes,
  • 02:38maybe a little bit longer,
  • 02:39a little bit less depending
  • 02:41on how our speakers feeling.
  • 02:42And then I'll moderate AQ and A.
  • 02:43So you'll have a chance after the talk.
  • 02:45And those who are on Zoom,
  • 02:47put your questions in through
  • 02:48the Q&A function on Zoom,
  • 02:49if you would, and then we'll have
  • 02:51a conversation that'll take us.
  • 02:53And but at at 6:30 at the latest,
  • 02:56I will close it up.
  • 02:57So you don't have to wonder how
  • 02:59long you're going to be or even
  • 03:00if the questions are really good
  • 03:01and the conversation's great.
  • 03:02We will stop.
  • 03:03So we'll be done at 6:30 to set you
  • 03:05free to go and and read, you know,
  • 03:07some neurosurgery texts all night or
  • 03:09whatever it is that you're inclined to do.
  • 03:11And for now,
  • 03:12I turn it over to Steve.
  • 03:13Thank you,
  • 03:14Sir.
  • 03:14Thanks
  • 03:14very much, Martin. And thanks to everyone
  • 03:17for the invitation. Here, let me.
  • 03:25Yeah.
  • 03:42So
  • 03:44let me tell you a bit of a story
  • 03:48about some of the work that
  • 03:51we've been doing and is
  • 03:56people is this the microphone? I need?
  • 04:00No. Do I this thing?
  • 04:23That's right.
  • 04:37All right,
  • 04:41that should work.
  • 04:43So I put an outline together of of
  • 04:46what I'll talk to you about tonight
  • 04:48and let's start off with the global
  • 04:53code of conduct for research in
  • 04:57Research resource Poor Settings.
  • 05:01And this is a a consensus document
  • 05:05that's been worked on for several
  • 05:08years and it really highlights
  • 05:11some of the differences that ought
  • 05:14to be considered in working in
  • 05:18countries in the developing world.
  • 05:21This year they changed the title
  • 05:23of this to say the Trust Code.
  • 05:26I think that's an effort to
  • 05:29hide what it's about.
  • 05:32Perhaps the European Parliament has
  • 05:35adopted this as its ethics for how
  • 05:39European countries ought to conduct
  • 05:42research in the developing world.
  • 05:45And there are two overarching principles.
  • 05:50The 1st is that you need to develop
  • 05:54local community partnerships.
  • 05:57There's been a long history of what
  • 06:01has been termed colonial science.
  • 06:06We sit in institutions like this,
  • 06:08dream of wonderful research projects
  • 06:11and go out and find a place where
  • 06:14we can carry those projects out,
  • 06:16publish papers and there's
  • 06:18very little benefit locally.
  • 06:20So that's the second major principle is
  • 06:24that there should be local social value.
  • 06:28So and that's a key difference to what we
  • 06:33typically do in an institution like Yale.
  • 06:36We have people here with very
  • 06:39successful academic careers.
  • 06:41We value the creation of knowledge,
  • 06:45but we have with all due respect we
  • 06:48have people here who work on number
  • 06:50theory that if you did that in rural
  • 06:54Africa it might be very interesting,
  • 06:57but it doesn't improve the lives or the
  • 07:00health of the people that you've worked with.
  • 07:03And so curiosity based research
  • 07:06is something that these global
  • 07:10codes advocate that we don't
  • 07:12do in vulnerable populations.
  • 07:14So you add general and local value to to
  • 07:21how we value science and interesting delay.
  • 07:25So I am a pediatric neurosurgeon
  • 07:29and the most common indication for
  • 07:31operating on the brain of children
  • 07:34is that they have hydrocephalus,
  • 07:36they build up fluid and we do a
  • 07:39variety of different kinds of surgery
  • 07:42to relieve pressure on the brain.
  • 07:45The vast,
  • 07:47vast majority of children with hydrocephalus
  • 07:51are in the the developing world.
  • 07:54The largest concentration of cases is in
  • 07:58sub-Saharan Africa and the most common
  • 08:01cause is infection earlier in life.
  • 08:05This is very different from what we see
  • 08:07in the US or in Europe or Australia,
  • 08:09where hydrocephalus following infections
  • 08:11is not at all of that common anymore.
  • 08:21I have had the privilege for the last
  • 08:2416 years of collaborating with this
  • 08:27small hospital in eastern Uganda.
  • 08:30It's the Cure Children's Hospital.
  • 08:33It specializes in neurological
  • 08:36surgery of children.
  • 08:39Forty of their hydrocephalus cases,
  • 08:41which are their most common need for surgery,
  • 08:4540% are post infectious,
  • 08:4830% are children born with spina bifida,
  • 08:52an open spine.
  • 08:53They're also called neural tube defects,
  • 08:56so we have to surgically close their back.
  • 08:59Once their back is closed,
  • 09:012/3 or more of those children will
  • 09:04need to be treated for hydrocephalus.
  • 09:08And this delay here,
  • 09:12malnutrition is a pervasive
  • 09:15comorbidity for all of these patients.
  • 09:18And I'll get back to that a
  • 09:21little later on in the talk.
  • 09:27Most infectious hydrocephalus,
  • 09:29as I'm describing here,
  • 09:32if you were to look inside the brain,
  • 09:35you'd see with a scope,
  • 09:38very small pustules lining what
  • 09:41is called the appendimal surface
  • 09:44of the ventricles in the brain.
  • 09:47These are small postules
  • 09:48with space in between them.
  • 09:50They don't tend to become confluent.
  • 09:53There's a variety of things that that
  • 09:56we could discuss regarding that,
  • 09:58but we see this throughout
  • 10:01sub-Saharan Africa.
  • 10:02The sites that are able to
  • 10:04operate on these children.
  • 10:06The first thing I saw walking
  • 10:08into an operating room in Vietnam,
  • 10:10it's exactly the same phenomenon.
  • 10:13We're not in Haiti right now,
  • 10:15but my colleagues who've operated
  • 10:18in Haiti have seen again the
  • 10:20same type of syndrome.
  • 10:22It's completely uncharacterized.
  • 10:24And so much of the work that
  • 10:29I'll show you today is an effort
  • 10:32to learn more about this.
  • 10:35So I visit this site in 2007 and
  • 10:42in discussing with their physicians,
  • 10:45I I was very impressed with just how hard
  • 10:48it is to do technical neurosurgery in a
  • 10:52setting where the resources are not ample.
  • 10:55And I actually asked the medical director,
  • 11:00all right, what's the most
  • 11:03important problem you can't solve?
  • 11:07And he answered nicely.
  • 11:08It was Ben Wharf,
  • 11:09who's now on faculty at Harvard.
  • 11:12And And Ben said, well, why don't you
  • 11:15figure out what makes these kids sick?
  • 11:16And I thought, how hard can that be?
  • 11:222023 was really the year that
  • 11:24we finished up with the first
  • 11:26set of answers to that question.
  • 11:29So it's been a long journey
  • 11:31here and we finally needed the
  • 11:36resources of some major NIH support.
  • 11:40It's interesting to me,
  • 11:42it was a struggle to get NIH to
  • 11:45support this because it was felt
  • 11:47to have no feedback and impact on
  • 11:50the health of the United States.
  • 11:53Excuse me, Steve.
  • 11:56Yeah, definitely the weak link of the crowd.
  • 11:57So forgive you that I would move that and
  • 12:00I have to phone up.
  • 12:02Yeah, I can also just talk into this thing.
  • 12:06I just hate standing.
  • 12:09Is that any better? It is.
  • 12:12All right, So we got enough resources
  • 12:15from NIH to put together the kind
  • 12:18of study you'd want to do here.
  • 12:20Get very high quality samples,
  • 12:22put together a cryogenic
  • 12:25infrastructure that didn't exist.
  • 12:27Get thousands of samples safely shipped,
  • 12:30frozen to the US And in recent
  • 12:36years I'll describe what we found.
  • 12:38But in the last several years
  • 12:41there've been multiple cases that
  • 12:43are identical seen in the US.
  • 12:49What do you do when you
  • 12:51can't grow an Organism?
  • 12:53This is a brutally difficult set of strains
  • 12:57to get to grow in culture it turned out.
  • 13:02And so if you don't know what causes
  • 13:05infection, you can do several things.
  • 13:07All bacteria have genes that
  • 13:09are only present in bacteria,
  • 13:11so you can amplify them and sequence them.
  • 13:14And we have large databases so you
  • 13:17can tell what at least the genus is,
  • 13:19if not the species of of
  • 13:23an uncultured bacteria.
  • 13:24We confirm this with things
  • 13:28like RNA seq or PCR targeted to
  • 13:31what we think we've found.
  • 13:34RNAC is also critical.
  • 13:35There's no one gene in viruses,
  • 13:38so if you want to look for an
  • 13:41unbiased survey for what viruses
  • 13:43might be infecting someone or
  • 13:45what parasites might be present,
  • 13:47then you're dealing with RNAC.
  • 13:55By 2020, we'd teamed up with people
  • 14:00both from Penn State and from Columbia
  • 14:04University and found that there was only one
  • 14:07Organism that dominated these infections.
  • 14:10It's an unusual one.
  • 14:11It was a painy bacillus, which is
  • 14:14Greek or Latin for almost a bacillus.
  • 14:19It formed a highly neurotropic and
  • 14:22destructive infection of the brain.
  • 14:24You can see one of the images of one of the
  • 14:27infant brains here with calcified abscesses.
  • 14:31We did manage to get some
  • 14:34of these strains to grow,
  • 14:37figuring out when these children got
  • 14:41sick and how this apparent infection
  • 14:44might have related to previous disease.
  • 14:49We just finally put together and reported
  • 14:543 simultaneous linked case control trials.
  • 14:58This is 1400 patients,
  • 15:01thousands of samples,
  • 15:03over 2500 qPCR reactions to confirm what we
  • 15:10had found and this involved a maternal trial.
  • 15:15Many infants catch infections during
  • 15:18the process of birth or there
  • 15:22are also congenital infections.
  • 15:24In the US we screened all mothers
  • 15:28before at the time of delivery for
  • 15:31one Organism which used to cause the
  • 15:34most trouble in the United States.
  • 15:36We found no evidence of this Organism
  • 15:39in any of the maternal specimens.
  • 15:42Vaginal, placental,
  • 15:45maternal blood or cord blood.
  • 15:48Not likely it's coming from the mothers.
  • 15:51We looked at 800 neonatal sepsis
  • 15:55cases in several sites in the country
  • 15:58and 400 cases of hydrocephalus,
  • 16:01half of whom had a history of infection.
  • 16:06Almost half of the infants under three
  • 16:09months of age that came to us were still
  • 16:13PCR positive to this one Organism,
  • 16:17and 6% of the neonates with sepsis.
  • 16:21And we actually were able to capture
  • 16:24some true linkage cases where we
  • 16:26could capture the Organism within a
  • 16:30week of birth with clinical sepsis,
  • 16:33treat the sepsis,
  • 16:35appear to clear it from the periphery
  • 16:39of the infant.
  • 16:40Child's not febrile feeding well,
  • 16:42no longer lethargic, goes home,
  • 16:45but comes back a month or two later with
  • 16:49continued infection in the brain and
  • 16:51with the head enlarging from hydrocephalus.
  • 16:55So what did we just do over 20 years ago,
  • 17:00Frederickson Relman talked about
  • 17:03the possibility of doing a sequence
  • 17:07based identification of pathogens and
  • 17:11proof that these molecules showed
  • 17:14that an Organism caused an infection.
  • 17:18Robert Koch,
  • 17:20about 150 years ago had postulates
  • 17:24that said to prove an infection you've
  • 17:27also got the culture and Organism you
  • 17:29have to be able to infect an animal with it.
  • 17:33We've just violated all of those
  • 17:39those strictures. Now here,
  • 17:40if I'm standing in front of you,
  • 17:44you all will think that's
  • 17:46cutting edge and clever.
  • 17:48But I didn't quite see covenants
  • 17:50that in other settings.
  • 17:52I just violated all the fundamental
  • 17:55principles that good physicians were
  • 17:58taught by their highly respected mentors.
  • 18:01Working in other societies and in
  • 18:05other settings is often challenging
  • 18:07in ways that I can never predict.
  • 18:11Well, now the So what question.
  • 18:14I just spent millions of dollars
  • 18:16of our tax good taxpayers money.
  • 18:18It took years to finish all of this analysis.
  • 18:22We're still working on some pieces
  • 18:25of it and microbial genomic testing
  • 18:29is very expensive and it's slow and
  • 18:35none of the scales very readily.
  • 18:39And these are medical emergencies.
  • 18:41These children come in and they
  • 18:44are at serious risk of dying and
  • 18:46we need to make decisions quickly.
  • 18:49So I'll walk you through what
  • 18:51I like to call predictive,
  • 18:54personalized public health.
  • 18:57So what does that mean?
  • 19:00We've done a lot of observation.
  • 19:02We've done a lot of surveillance
  • 19:06of these infections.
  • 19:08And I'd like to be able to ask
  • 19:10a mother two questions which
  • 19:12they always know the answer to.
  • 19:14Where are you from?
  • 19:16And when did the infant get sick?
  • 19:19I'd like to use our prior knowledge
  • 19:23and experience then to say,
  • 19:26well,
  • 19:26what are the most likely organisms
  • 19:29and most important point of care
  • 19:32of the available antibiotics,
  • 19:34what are the best ones to pick?
  • 19:37Now if we're looking at post
  • 19:39infectious hydrocephalus,
  • 19:40which is how I backed into this,
  • 19:43that's not the problem.
  • 19:44If you want to cut this off,
  • 19:46you have to address the much
  • 19:49broader issue of neonatal sepsis.
  • 19:52And neonatal sepsis is probably
  • 19:56still responsible worldwide for well
  • 19:59over half a million deaths a year.
  • 20:03It's probably closer to 3/4
  • 20:05of a million deaths.
  • 20:07That's triple, I think,
  • 20:09the number of deaths of any age for malaria.
  • 20:14It's comparable to the number of global
  • 20:17deaths from tuberculosis of any age.
  • 20:20And I actually had the privilege
  • 20:24of testifying to Congress on this.
  • 20:27And the congressmen and women on that
  • 20:31committee are really rather surprised
  • 20:33because they haven't heard about this.
  • 20:35And in my testimony,
  • 20:37I suggested to them that the reason is
  • 20:41that newborn infants dying in developing
  • 20:44countries have had no political voice.
  • 20:48If you look at the most
  • 20:49recent studies I listed,
  • 20:51a Cambodian study,
  • 20:52and Nisa is a huge South Asian study.
  • 20:56These are beautifully done studies
  • 20:59on neonatal sepsis and they're
  • 21:01able to recover an apparent
  • 21:05pathogen in 2% of their cases,
  • 21:082% why test at some point it's the
  • 21:15traditional way we have gone about.
  • 21:18Identifying pathogens is an abysmal
  • 21:21failure in newborn infants for reasons
  • 21:25that I'm also happy to discuss.
  • 21:28But the loss of life here really demands
  • 21:31that we do something very different
  • 21:33from what we've done for many years.
  • 21:38So to try to conceptualize of
  • 21:42what would be an improvement,
  • 21:47we've put all 60,000 villages in Uganda and
  • 21:53fuse them onto the satellite climate grids.
  • 21:57That's useful for a number of
  • 21:58reasons that I'll get into,
  • 22:00but it's also especially useful if we
  • 22:04want to look at environmental effects.
  • 22:07This particular disease
  • 22:08has a huge rainfall effect.
  • 22:11In terms of when these infants get sick,
  • 22:14the neonatal warts fill up as the rains
  • 22:17come in and empty out during the dry season.
  • 22:20Here are 4000 mapped cases.
  • 22:23Now, I don't have microbiology
  • 22:25on 20 years of cases,
  • 22:27but these are 4000 mapped cases.
  • 22:30See my mouse?
  • 22:32Yeah, of these infections
  • 22:34and look at the clustering.
  • 22:37So here's Lake Victoria and
  • 22:40there are huge enormous swamps,
  • 22:43papyrus swamps along the northern bank.
  • 22:46The Nile starts here in the middle of
  • 22:49this cluster and goes N to Lake Choga.
  • 22:53Again, large swampy,
  • 22:54wet areas on the southern and
  • 22:57northern banks of Choga and here in
  • 22:59this North Central region of Uganda.
  • 23:11Let's see if it's unhappy with me.
  • 23:14I'm very unhappy with me.
  • 23:26Well,
  • 23:29yeah, it's happy again.
  • 23:33What about genomics?
  • 23:34So do I need to know something
  • 23:37about the hosts as I'm mapping the
  • 23:40location and timing of disease?
  • 23:45In case you missed it,
  • 23:46the answer has to be yes.
  • 23:48Every infectious disease that we
  • 23:52contract as humans is actually a
  • 23:55product of both the genomics of the
  • 23:57Organism that give the Organism its
  • 24:01characteristics and your genetic
  • 24:03differences that both determine
  • 24:06whether you contract an infection
  • 24:09and how you do from an infection.
  • 24:11Just think of COVID,
  • 24:13there were many people who appeared
  • 24:16to be asymptomatic or perhaps never
  • 24:18got sick and I have two friends of
  • 24:22mine who died within two days or so
  • 24:25of contracting the viral infection.
  • 24:27So the the current thinking is
  • 24:31that we need to dual sequence
  • 24:35the the genetics of bacteria or
  • 24:39viruses as well as host to try to
  • 24:43get a comprehensive picture of how
  • 24:46to deal with infectious disease.
  • 24:53So what to do? I I show up with all of our
  • 24:56colleagues that we work with in Ambala,
  • 24:59Uganda, and I propose this.
  • 25:02And there is an awful lot of pushback.
  • 25:05What are the concerns? First, privacy.
  • 25:07How are we going to do genomic sequencing
  • 25:12of hosts and protect the individuals?
  • 25:16Second, Yeah, I get this one a lot.
  • 25:19What about paternity testing?
  • 25:23We could, if we wished, of course,
  • 25:26determine who the parents are,
  • 25:28if we had three samples.
  • 25:30And lastly, in a society that's
  • 25:33dealt with authoritarian regimes
  • 25:35in the past like Idi Amin,
  • 25:38there's concern for safety if the
  • 25:40government has access or the public
  • 25:43has access to genetic information.
  • 25:46So we wrote a very comprehensive document.
  • 25:49It's eight single space pages
  • 25:51of text going through all of the
  • 25:55issues we thought were important
  • 25:57and how we might approach them.
  • 26:00We would obviously not publish
  • 26:03any names of patients.
  • 26:05We'd use the birth dates
  • 26:06but not publish them.
  • 26:08We would use the village precise
  • 26:11locations but not publish that.
  • 26:13And I'll show you how we will
  • 26:16go about Geo masking and the
  • 26:18care that we offered that.
  • 26:19So you can't re identify by
  • 26:22knowing where someone came from.
  • 26:25The genomes would not be individually
  • 26:29sequenced and deposited.
  • 26:30And then I thought,
  • 26:34I'm an amateur at this,
  • 26:36I need to run this by a pro.
  • 26:39So I had come to meet Judy Illis,
  • 26:41a very well known ethicist.
  • 26:43She is in Canada.
  • 26:45She has an extensive experience working
  • 26:48with the Canadian First Peoples,
  • 26:50the native population in Northern Canada.
  • 26:53So I forwarded this to Judy.
  • 26:55She was great.
  • 26:56She went through every paragraph
  • 26:58and she comes back and says you
  • 27:00may be working with populations,
  • 27:02but you have to figure out
  • 27:04a way to return results.
  • 27:06All right.
  • 27:07So I approached colleagues in the
  • 27:09government and we worked out that if
  • 27:12we had findings that were important
  • 27:14for various peoples within the country,
  • 27:18that we'd work with government agencies
  • 27:21to return those results properly.
  • 27:25And then of course,
  • 27:26we went to all the institutions
  • 27:29to get their approval.
  • 27:30The local IRB ethics boards,
  • 27:33the US Ethics board,
  • 27:35the government oversight board
  • 27:37in Uganda for human research.
  • 27:40And I floated it by NIH as well to
  • 27:42make sure that all of the stakeholders
  • 27:45on the compliance side had a chance
  • 27:48to give us feedback and prove this.
  • 27:51And if you look at those little grid squares,
  • 27:56I looked for the ones that
  • 27:58didn't have much population in
  • 28:00the country of Uganda,
  • 28:06country of Uganda,
  • 28:07you see these sparsely populated areas.
  • 28:10So some of these are game parks.
  • 28:13More elephants and lions live there
  • 28:16than humans for obvious reasons.
  • 28:19There's also a large arid region in
  • 28:23the northeast that has a a sparsely
  • 28:26populated nomadic population,
  • 28:28and we're going to come
  • 28:29back to that in a bit.
  • 28:30And we we in part of our proposal
  • 28:34is that we would not map any points
  • 28:37on any of the maps we're doing from
  • 28:40any place with less than 1000 people
  • 28:44in 120 square kilometer grid space.
  • 28:50In the US, we don't map zip codes
  • 28:55with less than 20,000 people for the
  • 28:58same reason in Uganda we picked 1000,
  • 29:02we picked a larger square mile area and
  • 29:07then we actually jitter the points.
  • 29:11So the points I just showed you on that
  • 29:14map aren't actually the exact location
  • 29:18where those villages are located.
  • 29:21Here's a little picture of a colleague
  • 29:23of mine and and a local resident
  • 29:26hiking on a footpath over hills
  • 29:28trying to find a village cluster
  • 29:31where one of these infants is located.
  • 29:33We think and all the people we've had review
  • 29:38this think that that's adequate protection,
  • 29:41the way we design this,
  • 29:43so that we can publish maps
  • 29:44and show you the clustering.
  • 29:53We know a lot about ancient migrations in
  • 29:57many parts of the world and of of course,
  • 29:59in Africa. This is an old map of
  • 30:02Jared Diamond who wrote Guns,
  • 30:04Germs and Steel in Science 20 years ago.
  • 30:08And Uganda is right sitting wrapped around
  • 30:12the northern part of Lake Victoria.
  • 30:15Here and in that part of Central
  • 30:19Africa there are two main migrations.
  • 30:21The Bantu expansion started
  • 30:24around 5000 years ago, we think,
  • 30:27and these people came up from
  • 30:29the southern parts of Uganda,
  • 30:31of of sub-Saharan Africa,
  • 30:33and also came in from the southwest.
  • 30:37Several thousand years later,
  • 30:38there's a migration of Nilo
  • 30:41Saharan people from the north.
  • 30:43They come down, they literally
  • 30:45seem to meet at the Nile River,
  • 30:48which is a natural barrier.
  • 30:53If you look at the clustering,
  • 30:55the simplest way of clustering genomes,
  • 30:59each of us has millions of differences
  • 31:03at the single base pair level
  • 31:06between our genomes if we sequenced
  • 31:10up all of us sitting in the room.
  • 31:13But if you look at the simplest
  • 31:15way of doing that,
  • 31:16just using a cluster technique,
  • 31:20principal components to look at,
  • 31:22how many groups could you
  • 31:26statistically have in your data.
  • 31:30This data gives you 4.
  • 31:32There's a northern group in blue,
  • 31:35There's a southern and
  • 31:38southwestern group in red.
  • 31:40There's a little bit of complexity
  • 31:43here along the Kenyan border.
  • 31:45We know that there's a Western
  • 31:48migration from the Swahili coast that's
  • 31:50been identified in recent years,
  • 31:53but basically we pull out the
  • 31:56ancient migration patterns trivially
  • 31:59from doing the simplest version.
  • 32:01This isn't even admixture analysis.
  • 32:05The simplest version of clustering
  • 32:08changes between chinos.
  • 32:11So we've done a little more
  • 32:13sophisticated effort at this.
  • 32:15We've fit these points to a smooth model,
  • 32:19but importantly,
  • 32:20we're looking at the proportion
  • 32:23of those groups.
  • 32:24Because none of us are pure mixtures,
  • 32:28we vary in our proportions
  • 32:31between our ancestries,
  • 32:33and what we find is that there are two
  • 32:36groups that are very closely related.
  • 32:38Those are Bantu,
  • 32:41and then there's one Nilo Saharan group.
  • 32:44The Nilo Saharan group is the largest
  • 32:48distance difference distance between
  • 32:50those two Bantu groups present.
  • 32:54This all makes an awful lot of sense.
  • 32:57Jared Diamond was reasonably correct
  • 33:00in his estimates at the time.
  • 33:03Without the genomic information.
  • 33:06I'm also going to briefly introduce
  • 33:09the second group of hydrocephalus.
  • 33:12These are children with spina bifida.
  • 33:15They're born with what looks
  • 33:17like an open spine.
  • 33:19This is a strongly genetically
  • 33:22influenced malformation,
  • 33:23but it's a gene by environment disease.
  • 33:27We know that we can prevent most of
  • 33:30this with adequate folate fortification
  • 33:33of food or preconception vitamins.
  • 33:36The rates in the US and in most countries
  • 33:39that fortify food is quite low,
  • 33:42about one per 2000 live births.
  • 33:45The rate in Uganda is many,
  • 33:47many multiples of that.
  • 33:49I hope within the year we start to
  • 33:52actually nail down the true incidence
  • 33:54'cause we have to know that if
  • 33:57we're going to be more effective
  • 33:59about controlling the disorder.
  • 34:04If we take that ancestral map and we look
  • 34:09at other covariants such as poverty index,
  • 34:12the two covariants that most
  • 34:15associate with our mapping of
  • 34:18spina bifida risk our poverty and,
  • 34:22independently, nilo Saharan ancestry.
  • 34:27As I tell my colleagues,
  • 34:29this may not be true, but it's such
  • 34:32an important finding to perhaps have
  • 34:35stumbled into that if it's not true,
  • 34:38we need to demonstrate that it's not true.
  • 34:41If it is true, you all need to be asking
  • 34:45us what are the specific pathways and,
  • 34:49for instance, the metabolism of
  • 34:52folate or insert another gene products
  • 34:55that actually help tissues close,
  • 34:58like the neural tube,
  • 35:00and how might they be differently varied?
  • 35:03In people who migrated from
  • 35:06northern parts of Africa,
  • 35:09the World Health Organization a
  • 35:11few months ago passed a resolution
  • 35:14that all member states needed to
  • 35:17fortify or supplement folate to
  • 35:20prevent these neural tube defects.
  • 35:22Unfortunately,
  • 35:23they left it up to each member
  • 35:26state to figure out how to do it
  • 35:29because the context is extremely
  • 35:31different between societies.
  • 35:34If I fortify wheat in a country
  • 35:37where people don't eat wheat,
  • 35:39I'm not doing anything that's
  • 35:42that's helpful here.
  • 35:44So how do you do community engagement and
  • 35:49how do you handle the politics involved?
  • 35:52I usually didn't think I needed
  • 35:55to touch politics.
  • 35:57I mean, I know something about medicine.
  • 35:58I'm a pretty good amateur scientist.
  • 36:01I just went to a talk by John and Kangasong.
  • 36:06John was the former head of the
  • 36:09African CDC until we made him AUS
  • 36:13Ambassador at large from the US State
  • 36:16Department to deal with global health
  • 36:19security and diplomacy over health.
  • 36:22And one of the things he emphasized
  • 36:24to us is that if you can't manage
  • 36:27to bring the decision makers and the
  • 36:30political infrastructure to bear,
  • 36:32you can't affect the impact that you
  • 36:36need for any public health problem.
  • 36:39Just look at the disaster that we
  • 36:42created in our own society over
  • 36:44our public health efforts for COVID
  • 36:47vaccination masking. What a mess.
  • 36:52During COVID,
  • 36:53my colleagues and I created a very
  • 36:57detailed model to try to predict
  • 37:01within the continent of Africa
  • 37:04and track COVID cases.
  • 37:07Actually, it worked pretty well.
  • 37:09Yeah,
  • 37:09we could get pretty good estimates one
  • 37:13week and actually two weeks ahead.
  • 37:17And we work with what is the
  • 37:20national planning authority.
  • 37:22These are the folks that do the financial,
  • 37:25agricultural and health planning
  • 37:27for the country of Uganda.
  • 37:30And we trained with one of their
  • 37:34data scientists to do an excellent
  • 37:36job of of of working with this
  • 37:40model and doing predictions,
  • 37:41scenario predictions of how
  • 37:44policy change would affect COVID.
  • 37:47Abraham Mullen.
  • 37:48Guzi is a manager of technology and
  • 37:51innovation for the country at two ministries.
  • 37:54Joseph Muvwala is one of
  • 37:56their lead economists.
  • 37:58And they're actually here,
  • 38:01these are screenshots on national
  • 38:03television as they're explaining
  • 38:05to their society why this is a
  • 38:09way they can manage the pandemic.
  • 38:12At a cabinet meeting their president thought,
  • 38:16yeah that's exactly what we ought
  • 38:19to be doing and they ran with
  • 38:23this model 3 scenarios 1.
  • 38:25Continued lockdown 1.
  • 38:28Taking all restrictions away and
  • 38:32one the intermediate course.
  • 38:35And I I was there at the time.
  • 38:38And
  • 38:40predictions on the potential effects
  • 38:42of the different interventions
  • 38:44on the likely outcomes.
  • 38:47The model analyzes a number
  • 38:49of factors, including
  • 38:52I don't think I'll ever see a
  • 38:56a head of state explaining our
  • 38:59computational modeling that we do
  • 39:01here in the lab to an entire nation.
  • 39:04But he uses this to justify changing
  • 39:08his mind because partially restrict,
  • 39:11partially coming out of lockdown
  • 39:14appeared to be safe and fortunately
  • 39:17the predictions were pretty good.
  • 39:21So we had a fair amount of
  • 39:24credibility after that with some of
  • 39:26the decision makers in the country.
  • 39:29And we've been talking with them
  • 39:31and they've asked how can we partner
  • 39:34with them to address a very high
  • 39:37and stubbornly resistant rate of
  • 39:39neonatal mortality in the country.
  • 39:44We began weekly meetings by Zoom here
  • 39:47from Yale and then several trips over
  • 39:51to gather the stakeholders together in
  • 39:54person and go over what we could do.
  • 39:57And I wanted to focus on Preventable.
  • 40:01Causes of neonatal death
  • 40:05what we just closed the deal on two weeks
  • 40:09ago is the agreement to do the following.
  • 40:11It'll be led by the
  • 40:14National Planning Authority.
  • 40:15The Ministry of Health is on board.
  • 40:17Their Ministry of Science and
  • 40:19Technology is on board.
  • 40:21The Kingdom of Usoga,
  • 40:23which is shown here,
  • 40:26which may have the highest rates
  • 40:29of both neural tube defects and
  • 40:32neonatal sepsis in the country,
  • 40:34is on board.
  • 40:37We're going to keep the specimens
  • 40:40in the Ugandan biorepository
  • 40:42that NIH had originally built as
  • 40:44part of the H3 Africa program,
  • 40:47and we're going to try to do as
  • 40:49much of the sequencing as possible
  • 40:52using in country scientists.
  • 40:54What's the community here?
  • 41:01It's a question.
  • 41:03It's a complex question.
  • 41:06Here's what the community
  • 41:09partnership probably looks like.
  • 41:12It involves midwives and nurses.
  • 41:16It involves mothers who are advocates
  • 41:19for children with this disease.
  • 41:21Ruth here is a national organizer
  • 41:25for advocacy for spina bifida.
  • 41:29Lydia is on the National Nursing
  • 41:32Council helping direct policy for
  • 41:34nursing and mid midwives in the country.
  • 41:38This man is one of the lead faculty members
  • 41:42at the National University for Public Health.
  • 41:47This individual is in charge of
  • 41:51health policy for their planning.
  • 41:54Abraham I showed you this individual
  • 41:57is both one of their lead economists.
  • 42:00He's also the Prime Minister of Musoga.
  • 42:05I had a delightful couple of hours
  • 42:07with their Minister of Science.
  • 42:11Monica Musonero is a brilliant
  • 42:14microbiologist.
  • 42:15She's fascinated by all the
  • 42:17things that we've been doing.
  • 42:21This is the Minister of Health for
  • 42:24the Kingdom of Busoga and on board
  • 42:27as well is the Commissioner for
  • 42:29Child Health throughout Uganda,
  • 42:32the nation state of Uganda.
  • 42:35Pamela and Babassi is a protege
  • 42:38of Frances Fukuyama and she
  • 42:41is a renowned urban planner.
  • 42:43She is the chairwoman of their national
  • 42:47planning and on February 11th,
  • 42:51the Chaya Bazinga Day,
  • 42:53the King of Busoga will be rolling
  • 42:57out this project for neural tube
  • 43:01defects and neonatal sepsis to
  • 43:04the Kingdom Takes a Village.
  • 43:08Malnutrition effects absolutely
  • 43:12everything I just discussed,
  • 43:15and stunting is the most obvious physical
  • 43:19manifestation of severe malnutrition
  • 43:22and undernutrition in early childhood.
  • 43:25Worldwide,
  • 43:25there are about 1/4 of a billion
  • 43:29children who are malnourished to
  • 43:32the point that they're stunted.
  • 43:34And across Uganda,
  • 43:36the current estimated stunting rate is 30%.
  • 43:41That's not the worst society
  • 43:43in sub-Saharan Africa,
  • 43:44but these are pretty shocking numbers.
  • 43:48And take a look at this.
  • 43:49So this is probably the currently
  • 43:52best stunt study I know of on the
  • 43:57genetics of infant and child growth.
  • 44:01Look where they pull their populations from.
  • 44:05Yeah, it's from Western Europe,
  • 44:07the United States, and Australia.
  • 44:10I show this to my African colleagues,
  • 44:13and they're appalled.
  • 44:15But there's a serious lack of diversity
  • 44:18in our analysis of even fundamental
  • 44:22features of human existence,
  • 44:24like growth from diverse people
  • 44:27around the world.
  • 44:29Here's 6000 children surveyed in Uganda.
  • 44:34They start off around the median for
  • 44:37size at birth, and within 24 months,
  • 44:4030% of them are stunted in height.
  • 44:44Look at the fallacy that this
  • 44:48this brings you.
  • 44:50So I'm going to circle that
  • 44:52NE province in Uganda.
  • 44:54The Karamajung lived there.
  • 44:56These are tall,
  • 44:58melodic people.
  • 44:59They're related closely to the
  • 45:02Maasai across the border in Kenya.
  • 45:05If you look at height,
  • 45:07there's a little area that they look stunted.
  • 45:10But for the most part,
  • 45:12they're stunting free and it's
  • 45:16totally misleading.
  • 45:17If you look at weight for height,
  • 45:19they're starving.
  • 45:22Fallacy is that if you use the
  • 45:25wrong growth curves,
  • 45:27very tall people will look average in
  • 45:31height if they're seriously malnourished.
  • 45:34Now,
  • 45:35the African peoples are the most
  • 45:38diverse genetically on earth,
  • 45:40and if you look at recent studies,
  • 45:43this is a gorgeous set of papers that
  • 45:46Gurdasani has done over the last few years.
  • 45:49Take a look at the following These
  • 45:52are people from West Africa,
  • 45:54Yoruba and Igbo peoples from
  • 45:57Ghana from Nigeria.
  • 45:59Take a look at this simple plot
  • 46:02of admixture based off of the
  • 46:04single nucleotide changes that
  • 46:06we all have between our genomes.
  • 46:09Now look at the East African peoples
  • 46:12and the South African peoples
  • 46:15like the Khosan or the Zulu.
  • 46:18They have nothing at all like
  • 46:20the West African group do.
  • 46:22They They're very different
  • 46:24and they've had many thousands
  • 46:26of years of differentiation.
  • 46:28Now look with how the World
  • 46:31Health Organization provides
  • 46:32the worldwide growth curves.
  • 46:35They took a survey of wealthy
  • 46:38children in the capital of
  • 46:40Ghana in one neighborhood,
  • 46:43measured their heights and weights.
  • 46:46Then they took children from other
  • 46:48continents, Brazil, India, Norway,
  • 46:50Oman, the US and they created the World
  • 46:55Health Organization growth curves,
  • 46:58They don't actually apply
  • 46:59to any child on Earth.
  • 47:02So there's a really amazing malnutrition
  • 47:06unit at the Jinja Children's Hospital.
  • 47:10This is Harriet Nembuya.
  • 47:12I've been to this unit several
  • 47:14times and I haven't found
  • 47:18a better malnutrition unit in my travels.
  • 47:24Which brings us to a brief
  • 47:26discussion of on growth and form.
  • 47:29Now they teach this in that school.
  • 47:32Well, they didn't do my day either,
  • 47:35but if you're bored one night
  • 47:36wandering around the medical library,
  • 47:38you might find this.
  • 47:39It probably hasn't been checked out a lot CRC
  • 47:42Wentworth Thompson wrote this book in 1917.
  • 47:45It's a little hard to read 'cause he
  • 47:47knew of several different languages,
  • 47:49and he sprinkled them in like just
  • 47:53'cause he could, as he wrote it.
  • 47:55But he looked at the growth and form
  • 47:57of many different animal species,
  • 47:59including humans.
  • 48:00Take a look at what brains do.
  • 48:05Your brains do most of their growth
  • 48:08in the first three years of life,
  • 48:10but your body keeps growing.
  • 48:12So allometry is the study of
  • 48:16these proportional differences
  • 48:18between organ systems,
  • 48:20and it has a really bad history
  • 48:23associated with it in terms of what's
  • 48:27called biological determinism.
  • 48:28I used to think this was
  • 48:30one of my favorite books.
  • 48:32Stephen J Gould,
  • 48:34the Harvard biologist's book
  • 48:36on the Mismeasure of Man,
  • 48:38and I used to it,
  • 48:40used to be required reading in my laboratory.
  • 48:43He looks at what Paul Broca,
  • 48:46the neurologist in 150 years ago who
  • 48:49named the speech area of the brain.
  • 48:53And Broca said that there's a
  • 48:55remarkable relationship between
  • 48:57the development of intelligence
  • 48:59and the volume of the brain.
  • 49:01Broca had some axes to grind,
  • 49:05In addition to wanting to prove
  • 49:06that the French brain is better
  • 49:08than the German brain.
  • 49:12He was pretty hell bent on showing that
  • 49:15male brains were better than female brains.
  • 49:18So he did a fair amount of study,
  • 49:20carefully done. Taking brains out at
  • 49:24autopsy and weighing them carefully,
  • 49:27he finds that male and female brains
  • 49:30differ by about 200 grams. Now,
  • 49:33Gould knew about Thompson's work and Gould.
  • 49:38If my slide will advance,
  • 49:41Gould corrects for height and age and weight,
  • 49:47and he finds that there's he
  • 49:50cuts that difference in half.
  • 49:52When I read this as a grad
  • 49:54student the first time,
  • 49:55I remembered that the figure
  • 49:58was probably close to 0.
  • 50:00When I reread this many years later,
  • 50:02I realized that Gould couldn't accept
  • 50:05either his own or broke his data,
  • 50:08so he just wrote that the
  • 50:11difference wasn't there.
  • 50:12I no longer recommend
  • 50:14the book to my students.
  • 50:16We looked at over 1000 scans of
  • 50:20normal North American children,
  • 50:23and indeed there is a difference in
  • 50:26size between male and female brands
  • 50:29of normal children proportioned by
  • 50:31the demographics of North America.
  • 50:34Indeed, Roca's difference is right there,
  • 50:37and if you correct for height and weight,
  • 50:40you get ghoul's difference.
  • 50:42They were both right.
  • 50:43What they didn't have a chance
  • 50:45to do without imaging is look at
  • 50:48the ratio of brain size to fluid.
  • 50:50So you're all sitting here,
  • 50:51it's about 6:00 and you're you
  • 50:53have a good brain.
  • 50:55So your brains are all at
  • 50:57least 1400 grams or so,
  • 51:00and they're floating in a couple
  • 51:03of 100 CCS of spinal fluid and
  • 51:05suspended in their little yellow sea.
  • 51:08Your brains are weighing about 50 grams.
  • 51:11And that's why you're kind of happy now,
  • 51:13ready to have a meal and go to sleep.
  • 51:16Don't bang your head is another
  • 51:18lesson because it's kind of a
  • 51:21delicate situation up there.
  • 51:22But the universal featured that
  • 51:25they were all perhaps looking for.
  • 51:27Is that this ratio, a brain to fluid,
  • 51:31is very tightly controlled,
  • 51:32doesn't matter whether you're male or female,
  • 51:35and it doesn't matter whether
  • 51:36you're big or small.
  • 51:38We don't understand it yet,
  • 51:40but we then created childhood growth
  • 51:44curves for normal childhood growth and
  • 51:47we use it in our studies in North America,
  • 51:50and we use it in our randomized
  • 51:53clinical trials in Africa.
  • 51:55Does it apply?
  • 51:58So what about the rest of the
  • 52:01world and its various peoples?
  • 52:03Do we need different growth
  • 52:05curves for their children?
  • 52:09And I will wrap up in a few minutes,
  • 52:12but most brains don't have access to imaging
  • 52:15that we'd need to do brain growth curves.
  • 52:18MRI is about the lowest risk and most
  • 52:23expensive technology we've ever created,
  • 52:26and the costs are around
  • 52:29generating big fields.
  • 52:31So they made the mistake of inviting
  • 52:33me to give a plenary talk at the
  • 52:36large worldwide meeting of MRI people
  • 52:39and I just told them my thoughts.
  • 52:42I said well, we haven't developed an
  • 52:45approach to technology with a cost
  • 52:48to benefit guides our image quality.
  • 52:50We failed in major ways in developing
  • 52:54imaging and we oversell to ourselves
  • 52:57beautiful images that have no correlation
  • 53:00with patient outcome and we failed to
  • 53:03show the value of less expensive imagery.
  • 53:06I've actually got a lot of positive
  • 53:08feedback from this talk in the years since,
  • 53:11which I was quite pleased to see
  • 53:15this is an image from the 70s.
  • 53:17My looked like it wasn't actually
  • 53:20the 1st hemorrhage in the brain that
  • 53:22I saw on ACT but it looked like this
  • 53:25and it's a low resolution image.
  • 53:28Here's a modern day high resolution
  • 53:30MRI of the same kind of hemorrhage.
  • 53:33Patient outcome won't be determined by
  • 53:35how beautiful all those features are.
  • 53:38We need to know where the hemorrhage
  • 53:41is and know where to do the surgery
  • 53:43that we do to get it out.
  • 53:46So in in recent years we've during the
  • 53:49pandemic we got one of the first of
  • 53:52these portable low field units into
  • 53:55that same hospital in Eastern Uganda.
  • 53:57We're all wearing masks there that day.
  • 54:00And most recently this year we assembled
  • 54:03an entirely new type of device.
  • 54:06This is an MRI that can give very
  • 54:09high quality.
  • 54:10So you can see in the image here on top,
  • 54:14but it can be fully assembled,
  • 54:16operated,
  • 54:17maintained by the African engineers
  • 54:20pictured here.
  • 54:21The Dean of Engineering at Emberara,
  • 54:23Jonas Abungalach,
  • 54:24got his PhD in my lap and this
  • 54:29assembly was covered by articles
  • 54:32and Science and Nature.
  • 54:34Francis Shen has a very nice article
  • 54:37out on the ethics of this kind of
  • 54:40low field MRI as it gets distributed
  • 54:42around the world and his principles.
  • 54:45Of the ones I started the talk with,
  • 54:48Local Community Partnerships and
  • 54:51Local Society Value,
  • 54:54let me end with one set of thoughts
  • 54:57for discussion.
  • 54:58First,
  • 54:59does Uganda now need a Bantu and
  • 55:02an Elotic growth curve?
  • 55:05My colleagues in the country very
  • 55:07much want to see us do that.
  • 55:10Would monitoring brain growth
  • 55:12during renourishment help optimize
  • 55:15the recovery of these children?
  • 55:18I think that's a good thing to pursue.
  • 55:21But I'm going to leave you all with
  • 55:24a question. What shouldn't we do?
  • 55:27And I'd like to hear your thoughts
  • 55:31on that in discussion.
  • 55:33Nobody does what I just showed
  • 55:35you on their own.
  • 55:37An awful lot of people in an awful
  • 55:39lot of places have really poured their
  • 55:41hearts and souls into this work,
  • 55:44and really what I'm telling you
  • 55:46today is representing all
  • 55:48of their efforts. So thanks,
  • 55:51everybody, and love to discuss.
  • 56:00Would you like a chair? You've
  • 56:01been standing up here for an hour.
  • 56:02You good? I'm good. OK, so I'm gonna.
  • 56:04I think Karen's gonna bring
  • 56:06me up in a in a minute.
  • 56:08Some of the questions from Zoom.
  • 56:09In the meantime, we'll take
  • 56:11questions for Doctor Schiff
  • 56:12from the audience on this talk.
  • 56:15Yes, Sir. Wait one second. Actually.
  • 56:19So let's focus on Zoom. If you hear
  • 56:22you just wait. If you wait until
  • 56:23we get a microphone,
  • 56:29hold it up close,
  • 56:30Thank you for your for the talk.
  • 56:33You spoke earlier in your talk
  • 56:35about sort of the challenges of
  • 56:39getting funding for your research.
  • 56:41Could you give us a little more insight
  • 56:43into that justifying taking U.S.
  • 56:48tax dollars to fund research in in Africa and
  • 56:53and you know how you justify that and so on.
  • 57:00So there's two parts to that answer.
  • 57:03First, to quote one of my colleagues here,
  • 57:07if you can do something that's really
  • 57:10worthwhile, just be relentless.
  • 57:12I mean, I've had reject many more
  • 57:15grants rejected than I've ever received.
  • 57:19But you know, learning how to
  • 57:22be compelling is important.
  • 57:25Building a track record,
  • 57:27starting with some small pilots,
  • 57:29None of us ever got major funding
  • 57:32without starting off with small steps.
  • 57:37The value of doing work on important
  • 57:41problems is that all of it benefits
  • 57:46healthcare everywhere.
  • 57:47Learning to diagnose an infection
  • 57:50you can't grow in.
  • 57:52Let's say a part of rural Africa is critical
  • 57:56for the infections we can't diagnose here.
  • 57:59Walk on to our neonatal intensive care unit,
  • 58:02make friends with your favorite
  • 58:04neonatologist and in a quiet
  • 58:06moment it might take half a meal.
  • 58:09In a quiet moment, say,
  • 58:11how many septic infants do you
  • 58:13never get a diagnosis on and you'll
  • 58:16be pretty shocked at that number.
  • 58:18It's well over 50%,
  • 58:20and there's some good reasons for that,
  • 58:22but you can apply that to adult sepsis.
  • 58:25You can apply that to many cases of
  • 58:29syndromic disease where it's not
  • 58:31obvious what causes a syndrome.
  • 58:34Sepsis, Meningitis, fever with rash,
  • 58:38flu like illness.
  • 58:40So these techniques are broadly
  • 58:43needed in many, many settings,
  • 58:46including here.
  • 58:48We had to use them overseas,
  • 58:52but you could have developed all of
  • 58:56this with US based problems as well.
  • 58:59It turns out since we published
  • 59:03the Penny Bacillus finding in 2020,
  • 59:06the 1st paper that we did that
  • 59:09there have been six more recent
  • 59:11reports of US cases same highly
  • 59:15destructive Panibacillus infection.
  • 59:17Most of those children have died.
  • 59:20One or two went on to get hydrocephalus.
  • 59:24We have no idea what the total number is,
  • 59:28but I just presented this to NIH
  • 59:31and they were sort of amazed that
  • 59:35as we studied this disease that we
  • 59:38didn't know anything about far away,
  • 59:40that it's also here.
  • 59:41Now that we know about it.
  • 59:43I hope that answers your question.
  • 59:45Was it?
  • 59:46I think it answers a number of questions
  • 59:48because what was, was it here?
  • 59:51Was it identified by by DNA sequencing?
  • 59:54Was it identified by
  • 59:55by actually growth and culture? So
  • 59:57most of the ones here grew out,
  • 01:00:00we don't know the differences in the strains.
  • 01:00:03And there's a number of things that
  • 01:00:06I'd like to implement very quickly.
  • 01:00:09In our in our African work,
  • 01:00:14I think we may be able to get an
  • 01:00:17echo and mute that. There you go.
  • 01:00:21Got some technology going on here.
  • 01:00:23All right. Did I do something wrong?
  • 01:00:26No, it's OK. I was just something wrong.
  • 01:00:29All right, All right. Very good.
  • 01:00:32Next question, please. Yes, Sir.
  • 01:00:40Hi, Dad. So,
  • 01:00:43OK, so I'll let him have it,
  • 01:00:44let him have it, Robert. Got it.
  • 01:00:46So this is a genuine question.
  • 01:00:47I actually haven't asked this before. So
  • 01:00:51you mentioned Stephen Gould and the
  • 01:00:57kind of the issues with results
  • 01:01:01that you don't like and and
  • 01:01:04discounting those do you worry
  • 01:01:07about the potential ramifications
  • 01:01:09of like you mentioned the Nilus
  • 01:01:15Saharan people had a potential
  • 01:01:19vulnerability to to his Penny Bacillus.
  • 01:01:22Do you do you worry about the ramifications
  • 01:01:24of finding out that that is
  • 01:01:26indeed true or if you indeed
  • 01:01:28need to use different growth curves for
  • 01:01:31the not the Sahara and and Ponto people?
  • 01:01:33Like especially in an area where
  • 01:01:35there's it's very ethnically diverse
  • 01:01:38and genetically diverse as you said.
  • 01:01:40Do you worry about those kind
  • 01:01:42of differences especially in a,
  • 01:01:44as you mentioned a colonial science context.
  • 01:01:48Good question.
  • 01:01:50Sometimes you raise these kids.
  • 01:01:52They do. OK,
  • 01:01:55I think that it's important to be
  • 01:01:59able to personalize our public health,
  • 01:02:02But is everyone here recalls
  • 01:02:05recently. How we do that
  • 01:02:09critically determines whether
  • 01:02:10we're effective or we just turned
  • 01:02:14it into a political nightmare.
  • 01:02:16In societies where the level of education
  • 01:02:20is not what you would hope to have,
  • 01:02:25the messaging becomes critical
  • 01:02:27because people with can easily
  • 01:02:31perceive this as something's
  • 01:02:33wrong with them or create stigma.
  • 01:02:37I can't create that messaging
  • 01:02:40as some person from the US,
  • 01:02:42but my colleagues are going to
  • 01:02:47have that burden who live there
  • 01:02:49and understand the culture well.
  • 01:02:51And my physician colleagues really want to
  • 01:02:55improve the medicine that they deliver.
  • 01:02:59But I did offer a teaser to everyone
  • 01:03:02about what we would not want to do.
  • 01:03:07I'm negotiating right now to get a
  • 01:03:10scanner for that malnutrition unit.
  • 01:03:12I think we'll probably show that
  • 01:03:16with renourishment we can get brains
  • 01:03:20of these children to grow better.
  • 01:03:23Do I want to personalize that?
  • 01:03:29There's several questions I don't think
  • 01:03:32I'll ever explore that I could explore.
  • 01:03:35One is, is there a difference in
  • 01:03:38brain size and brain growth between
  • 01:03:41Nilotic versus Bantu peoples?
  • 01:03:47It's a nil hypothesis to say no,
  • 01:03:50every nothing's identical and
  • 01:03:55somebody's going to have bigger
  • 01:03:57brains than the other person. And it
  • 01:04:02whatever medical benefit you might
  • 01:04:05have from that, I think would be
  • 01:04:08far outweighed by the harms that
  • 01:04:10you potentially would create by
  • 01:04:14stigmatizing a society with no,
  • 01:04:17no realistic benefits. So
  • 01:04:22it's a fine line and it's the judgement call.
  • 01:04:26I have kids dying of infection and
  • 01:04:29I could improve that death rate.
  • 01:04:32Then it's worth stepping into the arena,
  • 01:04:35especially if we can figure out, I mean,
  • 01:04:38what gives you a predilection from disease.
  • 01:04:40Go look at Casanova. Love that name.
  • 01:04:42Look at Casanova's papers and his work.
  • 01:04:44He summarizes it in those
  • 01:04:46two papers in PNAS in 2015.
  • 01:04:49What he finds is that you can have very
  • 01:04:52specific predilections to certain infections,
  • 01:04:56like staph aureus,
  • 01:04:57because you have an interleukin
  • 01:05:01or a cytokine protein that helps
  • 01:05:05you defend against infection.
  • 01:05:07And it's not quite right,
  • 01:05:08the same way that sicklers get into
  • 01:05:11trouble from sickle cell disease
  • 01:05:13because they have one base pair
  • 01:05:16different in their hemoglobin molecule.
  • 01:05:19So what that means is we ought
  • 01:05:23to be able to treat it.
  • 01:05:25We replace protein compounds in hemophilias.
  • 01:05:32Would we treat someday a person with
  • 01:05:36an infection from staph aureus with a
  • 01:05:40commonly defective protein by giving them
  • 01:05:43a replacement protein as well as antibiotics?
  • 01:05:48We don't do that today,
  • 01:05:50but we're probably pretty
  • 01:05:52close to being able to do that.
  • 01:05:55So it's judgment call, Robert.
  • 01:05:58And eventually,
  • 01:06:00it all comes down, I think,
  • 01:06:03to benefits and risks.
  • 01:06:05And I do think as we get
  • 01:06:08deeper into a genomic age,
  • 01:06:10that we have to think pretty
  • 01:06:12carefully about that.
  • 01:06:16Could you, Steve, go back a little bit
  • 01:06:18and and talk or mention you when you
  • 01:06:20talked about Gould's comments on Broca?
  • 01:06:22Sort of like, I remember like
  • 01:06:247 things from medical school,
  • 01:06:26but one of them was new problems
  • 01:06:27of Eclomisphere, Ghosh Broca.
  • 01:06:31And I'm fascinated by Google saying,
  • 01:06:33no, I don't accept that.
  • 01:06:34So he just said, no,
  • 01:06:35I don't even accept my own data.
  • 01:06:37This is in in terms of where
  • 01:06:41science and bioethics meet.
  • 01:06:42I've encountered this
  • 01:06:43from time to time as well.
  • 01:06:44And I've I've coined the phrase as we
  • 01:06:46do this when I teach us don't fear the
  • 01:06:48data because I have heard people say,
  • 01:06:50well here is the data,
  • 01:06:51but we're not going to talk about
  • 01:06:52it because it doesn't bring us
  • 01:06:55to the conclusion we want, right.
  • 01:06:57Do you think some of that has gone
  • 01:06:58on in terms of brain size and brain
  • 01:07:00growth and is that could that possibly
  • 01:07:02could the fear of the data direct
  • 01:07:04how we move forward with the science?
  • 01:07:05Of course.
  • 01:07:07Should it?
  • 01:07:09No.
  • 01:07:11But
  • 01:07:12I'm torn with these things like
  • 01:07:14some of your fan clubs going
  • 01:07:16he's got a test to take tonight.
  • 01:07:19But I I I worry a great deal the power of
  • 01:07:25these technologies to uncover facts which
  • 01:07:29we may not be able to handle. I mean,
  • 01:07:36look at the conflicts around the world.
  • 01:07:37It doesn't take much.
  • 01:07:39I think of Rwanda, in particular
  • 01:07:43the Tutsis and the the Hutu.
  • 01:07:47We're not even sure they were
  • 01:07:49actually both ancestral people,
  • 01:07:52but politically they were set up in a
  • 01:07:56way that led to an enormous genocide
  • 01:07:59of a population within about 90 days.
  • 01:08:06I think we need to be very careful
  • 01:08:09because we have tools which can
  • 01:08:12literally weaponize our science.
  • 01:08:14And this wasn't obvious to me when I
  • 01:08:19started looking at things like the
  • 01:08:21genomics of these children in Africa.
  • 01:08:23But gradually I would sit with my colleagues,
  • 01:08:27helps to spend a lot of time
  • 01:08:29with your colleagues overseas.
  • 01:08:30And I sort of looked at them and said
  • 01:08:34we can cause an awful lot
  • 01:08:36of trouble if we do this.
  • 01:08:37And we all sort of looked
  • 01:08:39at each other and said,
  • 01:08:40yeah, let's not do that.
  • 01:08:44I wish there was like the adult in the
  • 01:08:47room who would have said long ago to us,
  • 01:08:49do this, but don't do that.
  • 01:08:51But there isn't. It's us.
  • 01:08:53And I think these are burdens.
  • 01:08:56Gould really disappointed me.
  • 01:09:00I've read so much of his work.
  • 01:09:02It's He's such a brilliant scientist.
  • 01:09:05If you read Edward O Wilson's
  • 01:09:09autobiography called Naturalist,
  • 01:09:10you might worry a little
  • 01:09:13about how difficult Gould,
  • 01:09:16in a professional environment,
  • 01:09:18might have been to the people around him.
  • 01:09:21But many of us are not easy.
  • 01:09:25And yeah, we do good work, I hope.
  • 01:09:28But it's a trap.
  • 01:09:30It's a trap that Ghoul felled into.
  • 01:09:33He was a very politically active person,
  • 01:09:38and he wasn't going to accept
  • 01:09:40that result for anything.
  • 01:09:42When I read it with, I think,
  • 01:09:45a fair amount of care,
  • 01:09:46I didn't appreciate it as a student.
  • 01:09:50You'd appreciate what? I
  • 01:09:50didn't appreciate his bias as a student.
  • 01:09:53It took took losing hair and being
  • 01:09:56in the business for a long time
  • 01:09:59and to look at that and go, Oh no,
  • 01:10:02look what he did and then he
  • 01:10:04wrote it all down. But you know,
  • 01:10:07we read these things for the message.
  • 01:10:10How many of us look at a scientific paper
  • 01:10:13and you know, you read the abstract,
  • 01:10:16the first paragraph, the last paragraph.
  • 01:10:18Is there anything in between that's
  • 01:10:21worth your time before you move
  • 01:10:23on to the next task of the day?
  • 01:10:25But if I leave you any of you with a caution,
  • 01:10:29it's be careful, and be careful
  • 01:10:32what even the experts tell you.
  • 01:10:38Other questions, things I can try to answer,
  • 01:10:43Sir.
  • 01:10:47Thanks, Doctor Schiff. I'm curious, I
  • 01:10:51mean, you work with so many
  • 01:10:55people from Uganda. Do you find like
  • 01:10:57when when you're working
  • 01:10:58with your African colleagues,
  • 01:10:59you you have any like favorite
  • 01:11:03examples of ethical disagreement
  • 01:11:05where you just that are particularly
  • 01:11:07intractable maybe that are grounded
  • 01:11:09in cultural differences or different
  • 01:11:13just, you know, starting from
  • 01:11:15different ethical premises?
  • 01:11:17Does that make sense? Yeah,
  • 01:11:22I
  • 01:11:26I'm a short white guy from the
  • 01:11:28US and I didn't grow up overseas.
  • 01:11:34And over the years I've worked very
  • 01:11:38closely with a lot of both physicians
  • 01:11:44and also with patients, families.
  • 01:11:49And I think the one thing I
  • 01:11:52come away with is there's a
  • 01:11:56real universe have universality
  • 01:12:00between doing medicine anywhere,
  • 01:12:04and I find very much a lack of
  • 01:12:10disagreement between myself
  • 01:12:11and the colleagues I work with.
  • 01:12:17Whereas we all sort of agree that certain
  • 01:12:21science studies are way out of bounds.
  • 01:12:25And the other thing I noticed is that
  • 01:12:30mothers of sick infants are the same
  • 01:12:33everywhere they care deeply for.
  • 01:12:37And
  • 01:12:41I I look at the women who bring their
  • 01:12:44infants in and their willingness to
  • 01:12:46let us try to enroll them in studies
  • 01:12:50of their children's illnesses.
  • 01:12:54And I think most of the cultural differences
  • 01:13:00just melt away over young infants.
  • 01:13:03It's probably why I can show you those
  • 01:13:09examples of like government leadership,
  • 01:13:14nursing leadership, child advocates,
  • 01:13:17all in total agreement
  • 01:13:20over certain things we do.
  • 01:13:23And it's probably why that list
  • 01:13:25of collaborators was so long.
  • 01:13:29Infants or a universal currency.
  • 01:13:33And if I were studying, I don't know,
  • 01:13:37sexually transmitted disease of teenagers,
  • 01:13:42I think it would be a much
  • 01:13:45more difficult path to follow.
  • 01:13:52Thank you. Other questions,
  • 01:13:57they look tired and hungry. Say again,
  • 01:13:59They look tired and hungry. They look
  • 01:14:01tired and hungry. All right.
  • 01:14:02Well, we gave them a little some of
  • 01:14:04that just wet their appetite both for
  • 01:14:06more sandwiches and more knowledge.
  • 01:14:07This was a wonderful presentation.
  • 01:14:09Doctor Schiff, thank you so much.
  • 01:14:11Thank you all for coming. Thanks
  • 01:14:16everybody. What's the
  • 01:14:16talk about? What's the talk about?
  • 01:14:20All right, we'll see you all in January. Have
  • 01:14:23a good holidays.