Featured Publications
Population genomics of Group B Streptococcus reveals the genetics of neonatal disease onset and meningeal invasion
Chaguza C, Jamrozy D, Bijlsma M, Kuijpers T, van de Beek D, van der Ende A, Bentley S. Population genomics of Group B Streptococcus reveals the genetics of neonatal disease onset and meningeal invasion. Nature Communications 2022, 13: 4215. PMID: 35864107, PMCID: PMC9304382, DOI: 10.1038/s41467-022-31858-4.Peer-Reviewed Original ResearchConceptsPopulation genomicsMicrobial population genomicsGroup B streptococciWide association studyPopulation structureGenetic variationGenetic signaturesCapsule biosynthesis locusDisease onset timeAssociation studiesB streptococciInvasive neonatal GBS diseaseNeonatal GBS diseaseGenomicsPathogen surveillanceAcute invasive diseaseGeneticsOnset timeDisease pathogenesisGBS diseasePreterm birthTissue infectionsDisease burdenDisease onsetInvasive disease
2017
Population genetic structure, antibiotic resistance, capsule switching and evolution of invasive pneumococci before conjugate vaccination in Malawi
Chaguza C, Cornick JE, Andam CP, Gladstone RA, Alaerts M, Musicha P, Peno C, Bar-Zeev N, Kamng'ona AW, Kiran AM, Msefula CL, McGee L, Breiman RF, Kadioglu A, French N, Heyderman RS, Hanage WP, Bentley SD, Everett DB. Population genetic structure, antibiotic resistance, capsule switching and evolution of invasive pneumococci before conjugate vaccination in Malawi. Vaccine 2017, 35: 4594-4602. PMID: 28711389, PMCID: PMC5571440, DOI: 10.1016/j.vaccine.2017.07.009.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultBacterial CapsulesChildChild, PreschoolDrug Resistance, Multiple, BacterialEvolution, MolecularFemaleGenome, BacterialHigh-Throughput Nucleotide SequencingHumansInfantInfant, NewbornMalawiMalePneumococcal InfectionsPneumococcal VaccinesPrevalenceRetrospective StudiesSerogroupSerotypingStreptococcus pneumoniaeVaccinationVaccines, ConjugateYoung AdultConceptsPneumococcal conjugate vaccineMDR ratePneumococcal isolatesHigher MDR rateImplementation of PCV13Prevalence of serotypesNon-vaccine serotypesInvasive pneumococcal isolatesGood infection preventionAntibiotic resistance ratesAntibiotic resistanceAbsence of vaccinesReplacement serotypesSerotype replacementInvasive pneumococciPneumococcal infectionConjugate vaccineSerotype 12FDisease burdenInfection preventionSerotype prevalenceHigh prevalenceInvasive isolatesContinued surveillanceResistance ratesGenomic Epidemiology of Penicillin-Nonsusceptible Pneumococci with Nonvaccine Serotypes Causing Invasive Disease in the United States
Andam CP, Mitchell PK, Callendrello A, Chang Q, Corander J, Chaguza C, McGee L, Beall BW, Hanage WP. Genomic Epidemiology of Penicillin-Nonsusceptible Pneumococci with Nonvaccine Serotypes Causing Invasive Disease in the United States. Journal Of Clinical Microbiology 2017, 55: 1104-1115. PMID: 28100596, PMCID: PMC5377837, DOI: 10.1128/jcm.02453-16.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overChildChild, PreschoolEpidemiological MonitoringEvolution, MolecularFemaleGenome, BacterialGenotypeHumansInfantInfant, NewbornMaleMiddle AgedMolecular EpidemiologyPenicillin ResistancePneumococcal InfectionsSequence Analysis, DNASerogroupStreptococcus pneumoniaeUnited StatesYoung AdultConceptsActive Bacterial Core surveillancePneumococcal Molecular Epidemiology NetworkNonvaccine typesVaccine typesPenicillin-nonsusceptible pneumococciAntibiotic-resistant strainsNVT pneumococciNonvaccine serotypesSerotype 35BPneumococcal serotypesInvasive diseaseSerogroups 23Core surveillanceEpidemiology NetworkDisease controlDisease prevalencePNSPGenomic epidemiologyFuture surveillanceVaccinationSerotypesResistant clonesSerotype switchingPneumococciDisease
2015
High multiple carriage and emergence of Streptococcus pneumoniae vaccine serotype variants in Malawian children
Kamng’ona A, Hinds J, Bar-Zeev N, Gould KA, Chaguza C, Msefula C, Cornick JE, Kulohoma BW, Gray K, Bentley SD, French N, Heyderman RS, Everett DB. High multiple carriage and emergence of Streptococcus pneumoniae vaccine serotype variants in Malawian children. BMC Infectious Diseases 2015, 15: 234. PMID: 26088623, PMCID: PMC4474563, DOI: 10.1186/s12879-015-0980-2.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentBacterial CapsulesBacteriological TechniquesChildChild, PreschoolCross ProtectionDNA, BacterialFemaleGenetic VariationHIV InfectionsHumansInfantInfant, NewbornMalawiMaleNasopharynxOligonucleotide Array Sequence AnalysisPhylogenyPneumococcal InfectionsPneumococcal VaccinesSequence Analysis, DNASerogroupStreptococcus pneumoniaeConceptsPneumococcal carriageVaccine typesPneumococcal serotypesMalawian childrenMultiple carriageMultiple serotypesVaccine serotypes 6BInvasive pneumococcal diseaseMultiple pneumococcal serotypesCent of childrenYoung childrenVT serotypesPCV13 introductionPneumococcal diseaseNasopharyngeal samplesPossible genetic alterationsSerotypes 6BMethodsThe studyPneumococcal strainsVaccine escapeKaronga DistrictOlder childrenSterile swabsDistinct serotypesGenetic alterations