2023
Paenibacillus spp infection among infants with postinfectious hydrocephalus in Uganda: an observational case-control study
Morton S, Hehnly C, Burgoine K, Ssentongo P, Ericson J, Kumar M, Hagmann C, Fronterre C, Smith J, Movassagh M, Streck N, Bebell L, Bazira J, Kumbakumba E, Bajunirwe F, Mulondo R, Mbabazi-Kabachelor E, Nsubuga B, Natukwatsa D, Nalule E, Magombe J, Erickson T, Ngonzi J, Ochora M, Olupot-Olupot P, Onen J, Ssenyonga P, Mugamba J, Warf B, Kulkarni A, Lane J, Whalen A, Zhang L, Sheldon K, Meier F, Kiwanuka J, Broach J, Paulson J, Schiff S. Paenibacillus spp infection among infants with postinfectious hydrocephalus in Uganda: an observational case-control study. The Lancet Microbe 2023, 4: e601-e611. PMID: 37348522, PMCID: PMC10529524, DOI: 10.1016/s2666-5247(23)00106-4.Peer-Reviewed Original ResearchConceptsMother-newborn pairsPostinfectious hydrocephalusCerebrospinal fluidNeonatal sepsisSpp infectionUgandan infantsMaternal bloodObservational case-control studyHospital OfficeInfant's cerebrospinal fluidBurden of morbidityCase-control studyRoute of infectionSubset of participantsMaternal feverCranial ultrasoundNeonatal infectionSepsis cohortOptimise treatmentTransplacental transmissionCord bloodObservational studyPlacental samplesSepsisHydrocephalusNeonatal Paenibacilliosis: Paenibacillus Infection as a Novel Cause of Sepsis in Term Neonates With High Risk of Sequelae in Uganda
Ericson J, Burgoine K, Kumbakumba E, Ochora M, Hehnly C, Bajunirwe F, Bazira J, Fronterre C, Hagmann C, Kulkarni A, Kumar M, Magombe J, Mbabazi-Kabachelor E, Morton S, Movassagh M, Mugamba J, Mulondo R, Natukwatsa D, Kaaya B, Olupot-Olupot P, Onen J, Sheldon K, Smith J, Ssentongo P, Ssenyonga P, Warf B, Wegoye E, Zhang L, Kiwanuka J, Paulson J, Broach J, Schiff S. Neonatal Paenibacilliosis: Paenibacillus Infection as a Novel Cause of Sepsis in Term Neonates With High Risk of Sequelae in Uganda. Clinical Infectious Diseases 2023, 77: 768-775. PMID: 37279589, PMCID: PMC10495130, DOI: 10.1093/cid/ciad337.Peer-Reviewed Original ResearchConceptsNeonatal sepsisPostinfectious hydrocephalusCerebrospinal fluidSigns of sepsisFull-term neonatesOptimal antibiotic treatmentUgandan referral hospitalQuantitative polymerase chain reactionNeonatal characteristicsClinical sepsisTerm neonatesUnderdiagnosed causeAntibiotic choiceMedian ageReferral hospitalUgandan hospitalNeurodevelopmental impairmentAdverse outcomesSpecimen typesAntibiotic treatmentPolymerase chain reactionClinical signsUnusual pathogensSepsisHigh risk
2022
Type IV Pili Are a Critical Virulence Factor in Clinical Isolates of Paenibacillus thiaminolyticus
Hehnly C, Shi A, Ssentongo P, Zhang L, Isaacs A, Morton S, Streck N, Erdmann-Gilmore P, Tolstoy I, Townsend R, Limbrick D, Paulson J, Ericson J, Galperin M, Schiff S, Broach J. Type IV Pili Are a Critical Virulence Factor in Clinical Isolates of Paenibacillus thiaminolyticus. MBio 2022, 13: e02688-22. PMID: 36374038, PMCID: PMC9765702, DOI: 10.1128/mbio.02688-22.Peer-Reviewed Original ResearchConceptsPostinfectious hydrocephalusClinical isolatesVirulence factorsCritical virulence factorPotential virulence factorsPoor long-term outcomesPrevention of hydrocephalusLong-term outcomesBacterial pathogensDevastating sequelaeNeonatal sepsisMiddle-income countriesNeonatal infectionSurgical interventionReference strainsNovel bacterial pathogensAfrican cohortBeta-lactamase genesChildhood mortalityHydrocephalusTherapeutic targetInfectionVirulent strainDevastating diseaseWhole-genome sequencingCytomegalovirus infections in infants in Uganda: Newborn-mother pairs, neonates with sepsis, and infants with hydrocephalus
Hehnly C, Ssentongo P, Bebell L, Burgoine K, Bazira J, Fronterre C, Kumbakumba E, Mulondo R, Mbabazi-Kabachelor E, Morton S, Ngonzi J, Ochora M, Olupot-Olupot P, Mugamba J, Onen J, Roberts D, Sheldon K, Sinnar S, Smith J, Ssenyonga P, Kiwanuka J, Paulson J, Meier F, Ericson J, Broach J, Schiff S. Cytomegalovirus infections in infants in Uganda: Newborn-mother pairs, neonates with sepsis, and infants with hydrocephalus. International Journal Of Infectious Diseases 2022, 118: 24-33. PMID: 35150915, PMCID: PMC9058984, DOI: 10.1016/j.ijid.2022.02.005.Peer-Reviewed Original ResearchConceptsNewborn-mother pairsCMV prevalenceClinical sepsisCytomegalovirus infectionCerebrospinal fluidPrevalence of CMVQuantitative PCRCMV positivityPostinfectious hydrocephalusVaginal sheddingCMV infectionHIV seropositivityNeonatal ageMaternal ageMaternal vaginalRisk factorsMedical CenterLong-term consequencesMother pairsSepsisNeonatesInfantsPrevalenceHydrocephalusCMV
2021
Preoperative risk and postoperative outcome from subdural fluid collections in African infants with postinfectious hydrocephalus.
Lane J, Ssentongo P, Peterson M, Harper J, Mbabazi-Kabachelor E, Mugamba J, Ssenyonga P, Onen J, Donnelly R, Levenbach J, Cherukuri V, Monga V, Kulkarni A, Warf B, Schiff S. Preoperative risk and postoperative outcome from subdural fluid collections in African infants with postinfectious hydrocephalus. Journal Of Neurosurgery Pediatrics 2021, 29: 31-39. PMID: 34598146, PMCID: PMC9078082, DOI: 10.3171/2021.7.peds21209.Peer-Reviewed Original ResearchBrain growth after surgical treatment for infant postinfectious hydrocephalus in Sub-Saharan Africa: 2-year results of a randomized trial.
Schiff S, Kulkarni A, Mbabazi-Kabachelor E, Mugamba J, Ssenyonga P, Donnelly R, Levenbach J, Monga V, Peterson M, Cherukuri V, Warf B. Brain growth after surgical treatment for infant postinfectious hydrocephalus in Sub-Saharan Africa: 2-year results of a randomized trial. Journal Of Neurosurgery Pediatrics 2021, 28: 326-334. PMID: 34243157, PMCID: PMC8742836, DOI: 10.3171/2021.2.peds20949.Peer-Reviewed Original ResearchPostinfectious hydrocephalusSurgical treatmentBrain volumeBrain growthBSID-III cognitive scoresMajor public health burdenSurgical treatment armSuccessful surgical treatmentBrain volume lossBrain volume changesEndoscopic third ventriculostomyFraction of patientsPublic health burdenChoroid plexus cauterizationBSID-III scoresNormal brain volumePostinfectious etiologySingle centerSub-Saharan AfricaTreatment armsThird ventriculostomyInfection preventionHealth burdenCT scanHydrocephalus
2020
Poisson Kalman filter for disease surveillance
Ebeigbe D, Berry T, Schiff S, Sauer T. Poisson Kalman filter for disease surveillance. Physical Review Research 2020, 2: 043028. PMID: 39211287, PMCID: PMC11360429, DOI: 10.1103/physrevresearch.2.043028.Peer-Reviewed Original ResearchPaenibacillus infection with frequent viral coinfection contributes to postinfectious hydrocephalus in Ugandan infants
Paulson J, Williams B, Hehnly C, Mishra N, Sinnar S, Zhang L, Ssentongo P, Mbabazi-Kabachelor E, Wijetunge D, von Bredow B, Mulondo R, Kiwanuka J, Bajunirwe F, Bazira J, Bebell L, Burgoine K, Couto-Rodriguez M, Ericson J, Erickson T, Ferrari M, Gladstone M, Guo C, Haran M, Hornig M, Isaacs A, Kaaya B, Kangere S, Kulkarni A, Kumbakumba E, Li X, Limbrick D, Magombe J, Morton S, Mugamba J, Ng J, Olupot-Olupot P, Onen J, Peterson M, Roy F, Sheldon K, Townsend R, Weeks A, Whalen A, Quackenbush J, Ssenyonga P, Galperin M, Almeida M, Atkins H, Warf B, Lipkin W, Broach J, Schiff S. Paenibacillus infection with frequent viral coinfection contributes to postinfectious hydrocephalus in Ugandan infants. Science Translational Medicine 2020, 12 PMID: 32998967, PMCID: PMC7774825, DOI: 10.1126/scitranslmed.aba0565.Peer-Reviewed Original ResearchConceptsPostinfectious hydrocephalusCSF samplesPIH casesPotential causative organismsCerebrospinal fluid accumulationCytomegalovirus coinfectionUgandan infantsNeonatal sepsisSurgical palliationNeonatal infectionInfant casesOptimal treatmentInfant cohortCommon causeCausative organismPediatric hydrocephalusFluid accumulationHydrocephalusAnaerobic bacterial isolatesControl casesInfectionFacultative anaerobic bacterial isolatesInfantsParasitic DNADiseaseInflammation in acquired hydrocephalus: pathogenic mechanisms and therapeutic targets
Karimy JK, Reeves BC, Damisah E, Duy PQ, Antwi P, David W, Wang K, Schiff SJ, Limbrick DD, Alper SL, Warf BC, Nedergaard M, Simard JM, Kahle KT. Inflammation in acquired hydrocephalus: pathogenic mechanisms and therapeutic targets. Nature Reviews Neurology 2020, 16: 285-296. PMID: 32152460, PMCID: PMC7375440, DOI: 10.1038/s41582-020-0321-y.Peer-Reviewed Original ResearchConceptsPosthaemorrhagic hydrocephalusPostinfectious hydrocephalusNeurosurgical disordersPathogenic mechanismsToll-like receptor 4Pathogenesis of hydrocephalusImportant protective responseEpendymal denudationCommon neurosurgical disorderSustained inflammationInflammatory mediatorsNeuroinflammatory conditionsImmune cellsReceptor 4Therapeutic approachesReparative inflammationCerebrospinal fluidCSF pathwaysHydrocephalusTherapeutic targetInflammationTherapeutic interventionsBrain ventriclesProtective responsePhysical irritants
2019
The Incidence of Postoperative Seizures Following Treatment of Postinfectious Hydrocephalus in Ugandan Infants: A Post Hoc Comparison of Endoscopic Treatment vs Shunt Placement in a Randomized Controlled Trial.
Punchak M, Mbabazi Kabachelor E, Ogwal M, Nalule E, Nalwoga J, Ssenyonga P, Mugamba J, Rattani A, Dewan M, Kulkarni A, Schiff S, Warf B. The Incidence of Postoperative Seizures Following Treatment of Postinfectious Hydrocephalus in Ugandan Infants: A Post Hoc Comparison of Endoscopic Treatment vs Shunt Placement in a Randomized Controlled Trial. Neurosurgery 2019, 85: e714-e721. PMID: 31086941, PMCID: PMC7534394, DOI: 10.1093/neuros/nyz122.Peer-Reviewed Original ResearchConceptsChoroid plexus cauterizationETV/CPCPostoperative seizure incidencePostinfectious hydrocephalusSeizure incidenceEndoscopic third ventriculostomyUgandan infantsShunt placementMantel-Haenszel hazard ratiosKaplan-Meier methodVentriculoperitoneal shunt placementPostoperative epilepsyPostoperative seizuresPreoperative symptomsEpilepsy incidenceFirst seizureHazard ratioControlled TrialsEndoscopic treatmentThird ventriculostomyTreatment modalitiesSeizure riskHead circumferenceRelative riskSeizure onset
2017
Endoscopic Treatment versus Shunting for Infant Hydrocephalus in Uganda
Kulkarni A, Schiff S, Mbabazi-Kabachelor E, Mugamba J, Ssenyonga P, Donnelly R, Levenbach J, Monga V, Peterson M, MacDonald M, Cherukuri V, Warf B. Endoscopic Treatment versus Shunting for Infant Hydrocephalus in Uganda. New England Journal Of Medicine 2017, 377: 2456-2464. PMID: 29262276, PMCID: PMC5784827, DOI: 10.1056/nejmoa1707568.Peer-Reviewed Original ResearchConceptsETV-CPCPostinfectious hydrocephalusUgandan infantsTreatment failureCognitive outcomesBrain volumeSingle-center studyEndoscopic third ventriculostomyChoroid plexus cauterizationMajor health problemSignificant differencesLanguage scoresSecondary outcomesEndoscopic treatmentPrimary outcomeVentricular sizeThird ventriculostomyInfant hydrocephalusComputed tomographyTreatment groupsAlternative treatmentLate failureBayley ScalesBrain growthConventional treatment
2011
Five-year survival and outcome of treatment for postinfectious hydrocephalus in Ugandan infants.
Warf B, Dagi A, Kaaya B, Schiff S. Five-year survival and outcome of treatment for postinfectious hydrocephalus in Ugandan infants. Journal Of Neurosurgery Pediatrics 2011, 8: 502-8. PMID: 22044377, DOI: 10.3171/2011.8.peds11221.Peer-Reviewed Original ResearchConceptsPostinfectious hydrocephalusFive-year survivalShunt placementPrimary brain injuryWorse functional outcomeKaplan-Meier methodLong-term outcomesLog-rank testOutcome of treatmentEndoscopic third ventriculostomyTreatment selection biasPublic health measuresOne-thirdUgandan infantsWorst sequelaeOperative mortalityNeonatal infectionFunctional outcomeThird ventriculostomyBrain injuryPrimary treatmentCommon causeInfant hydrocephalusSurvival advantageOriginal infectionAssociation of bacteria with hydrocephalus in Ugandan infants.
Li L, Padhi A, Ranjeva S, Donaldson S, Warf B, Mugamba J, Johnson D, Opio Z, Jayarao B, Kapur V, Poss M, Schiff S. Association of bacteria with hydrocephalus in Ugandan infants. Journal Of Neurosurgery Pediatrics 2011, 7: 73-87. PMID: 21194290, DOI: 10.3171/2010.9.peds10162.Peer-Reviewed Original ResearchConceptsUgandan infantsNeonatal sepsisPostinfectious hydrocephalusMajority of patientsMost patientsRecent infectionPolymerase chain reactionEffective treatmentPatientsPrevention strategiesHydrocephalusInfectionInfantsAcinetobacter speciesChain reactionAssociation of bacteriaBacterial DNAGram-negative bacteriaNegative bacteriaSepsisEnvironmental samplingSyndromeSeason infection