2024
Clonal Expansion of a Streptococcus pneumoniae Serotype 3 Capsule Variant Sequence Type 700 With Enhanced Vaccine Escape Potential After 13-Valent Pneumococcal Conjugate Vaccine Introduction
Kalizang'oma A, Swarthout T, Mwalukomo T, Kamng'ona A, Brown C, Msefula J, Demetriou H, Chan J, Roalfe L, Obolski U, Lourenço J, Goldblatt D, Chaguza C, French N, Heyderman R. Clonal Expansion of a Streptococcus pneumoniae Serotype 3 Capsule Variant Sequence Type 700 With Enhanced Vaccine Escape Potential After 13-Valent Pneumococcal Conjugate Vaccine Introduction. The Journal Of Infectious Diseases 2024, jiae040. PMID: 38530917, DOI: 10.1093/infdis/jiae040.Peer-Reviewed Original ResearchClonal expansionSequence typingAntimicrobial resistanceSusceptibility to opsonophagocytic killingWhole-genome sequencingStreptococcus pneumoniae serotype 3Serotype 3Post-PCV13 introductionNext-generation pneumococcal vaccinesPneumococcal conjugate vaccine introductionVaccine escapeConjugate vaccine introductionPneumococcal conjugate vaccineIncreased antimicrobial resistancePolysaccharide biosynthesisPhylogenetic reconstructionSequencing projectsLocus sequencesCapsule locusSequence clustersGenomic surveillanceOpsonophagocytic killingPhenotypic characteristicsVaccine introductionConjugate vaccine
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