2023
Saliva as an alternative sample type for detection of pneumococcal carriage in young children
Wyllie A, Rots N, Wijmenga-Monsuur A, van Houten M, Sanders E, Trzciński K. Saliva as an alternative sample type for detection of pneumococcal carriage in young children. Microbiology 2023, 169: 001394. PMID: 37819029, PMCID: PMC10634364, DOI: 10.1099/mic.0.001394.Peer-Reviewed Original ResearchMeSH KeywordsAgedCarrier StateChildChild, PreschoolHumansInfantPneumococcal InfectionsSalivaSerotypingStreptococcus pneumoniaeConceptsNasopharyngeal swabsCarriage detectionPneumococcal carriageSaliva samplesSubset of serotypesOlder age groupsConventional cultureAlternative sample typePneumococcal colonizationPneumococcal detectionPolymicrobial growthAge groupsStudy participantsSaliva samplingSwabsDiagnostic culturesGold standardLongitudinal studyYoung childrenSalivaCarriageChildrenInfantsMolecular detection methodsPneumococciPersistence of Pneumococcal Carriage among Older Adults in the Community despite COVID-19 Mitigation Measures
Wyllie A, Mbodj S, Thammavongsa D, Hislop M, Yolda-Carr D, Waghela P, Nakahata M, Stahlfeld A, Vega N, York A, Allicock O, Wilkins G, Ouyang A, Siqueiros L, Strong Y, Anastasio K, Alexander-Parrish R, Arguedas A, Gessner B, Weinberger D. Persistence of Pneumococcal Carriage among Older Adults in the Community despite COVID-19 Mitigation Measures. Microbiology Spectrum 2023, 11: e04879-22. PMID: 37036377, PMCID: PMC10269788, DOI: 10.1128/spectrum.04879-22.Peer-Reviewed Original ResearchConceptsInvasive pneumococcal diseasePneumococcal diseaseSchool-aged childrenOlder adultsPneumococcal carriageSaliva samplesCOVID-19 pandemicRate of carriageCOVID-19-related disruptionsUpper respiratory tractRegular contactNew Haven areaFirst yearCarriage prevalencePre-pandemic levelsMedical historyRespiratory tractHigh prevalenceStreptococcus pneumoniaeCOVID-19 mitigation measuresStudy participantsPneumococciPrevalenceDiseaseCarriage
2022
Impact of Temporary Storage Conditions on the Viability of Streptococcus pneumoniae in Saliva
Allicock O, York A, Waghela P, Yolda-Carr D, Weinberger D, Wyllie A. Impact of Temporary Storage Conditions on the Viability of Streptococcus pneumoniae in Saliva. MSphere 2022, 7: e00331-22. PMID: 36409104, PMCID: PMC9769876, DOI: 10.1128/msphere.00331-22.Peer-Reviewed Original ResearchPneumococcal genetic variability in age-dependent bacterial carriage
Kremer P, Ferwerda B, Bootsma HJ, Rots NY, Wijmenga-Monsuur AJ, Sanders E, Trzciński K, Wyllie AL, Turner P, van der Ende A, Brouwer MC, Bentley SD, van de Beek D, Lees JA. Pneumococcal genetic variability in age-dependent bacterial carriage. ELife 2022, 11: e69244. PMID: 35881438, PMCID: PMC9395192, DOI: 10.7554/elife.69244.Peer-Reviewed Original ResearchConceptsSecond cohortImproved vaccine formulationsFirst cohortFuture vaccination strategiesSingle nucleotide polymorphismsHost immune factorsAge-specific differencesPneumococcal carriageImmune factorsVaccination strategiesBacterial carriageCarriage studiesVaccine formulationsCohortGenetic factorsAdult hostsSerotypesHost ageAdultsCarriageChildrenGenetic backgroundWeak evidenceInfantsPopulation
2021
Delayed production of neutralizing antibodies correlates with fatal COVID-19
Lucas C, Klein J, Sundaram ME, Liu F, Wong P, Silva J, Mao T, Oh JE, Mohanty S, Huang J, Tokuyama M, Lu P, Venkataraman A, Park A, Israelow B, Vogels CBF, Muenker MC, Chang CH, Casanovas-Massana A, Moore AJ, Zell J, Fournier JB, Wyllie A, Campbell M, Lee A, Chun H, Grubaugh N, Schulz W, Farhadian S, Dela Cruz C, Ring A, Shaw A, Wisnewski A, Yildirim I, Ko A, Omer S, Iwasaki A. Delayed production of neutralizing antibodies correlates with fatal COVID-19. Nature Medicine 2021, 27: 1178-1186. PMID: 33953384, PMCID: PMC8785364, DOI: 10.1038/s41591-021-01355-0.Peer-Reviewed Original ResearchConceptsDeceased patientsAntibody levelsAntibody responseDisease severityAnti-S IgG levelsCOVID-19 disease outcomesFatal COVID-19Impaired viral controlWorse clinical progressionWorse disease severitySevere COVID-19Length of hospitalizationImmunoglobulin G levelsHumoral immune responseCoronavirus disease 2019COVID-19 mortalityCOVID-19Domain (RBD) IgGSeroconversion kineticsDisease courseIgG levelsClinical parametersClinical progressionHumoral responseDisease onset
2020
Serotype Patterns of Pneumococcal Disease in Adults Are Correlated With Carriage Patterns in Older Children
Wyllie AL, Warren JL, Regev-Yochay G, Givon-Lavi N, Dagan R, Weinberger DM. Serotype Patterns of Pneumococcal Disease in Adults Are Correlated With Carriage Patterns in Older Children. Clinical Infectious Diseases 2020, 72: e768-e775. PMID: 32989457, PMCID: PMC8315131, DOI: 10.1093/cid/ciaa1480.Peer-Reviewed Original ResearchConceptsInvasive pneumococcal diseaseSerotype-specific invasive pneumococcal diseaseDisease patternsOlder childrenPneumococcal diseasePneumococcal carriageCarriage prevalenceSerotype patternsCause of IPDIPD dataSerotype-specific carriage prevalenceAge groupingsDifferent age groupsComorbidity statusDisease burdenVaccination strategiesAge-related patternsCarriage dataCarriage patternsDifferent age categoriesAge groupsSpecific serotypesYoung adultsAdultsAge categoriesUpper respiratory tract colonization with Streptococcus pneumoniae in adults
Arguedas A, Trzciński K, O’Brien K, Ferreira DM, Wyllie AL, Weinberger D, Danon L, Pelton SI, Azzari C, Hammitt LL, Sá-Leão R, Brandileone MC, Saha S, Suaya J, Isturiz R, Jodar L, Gessner BD. Upper respiratory tract colonization with Streptococcus pneumoniae in adults. Expert Review Of Vaccines 2020, 19: 353-366. PMID: 32237926, DOI: 10.1080/14760584.2020.1750378.Peer-Reviewed Original ResearchConceptsPediatric approachPneumococcal colonizationPneumococcal detectionRespiratory sitesUpper respiratory tract colonizationAdult respiratory tractRespiratory tract colonizationHigh disease burdenPneumococcal carriage studiesRespiratory carriageNasal washesPeer-reviewed journalsRespiratory colonizationCarriage prevalencePneumococcal transmissionTract colonizationDisease burdenRespiratory tractCarriage studiesCurrent evidenceStreptococcus pneumoniaeMolecular diagnostic methodsRoutine cultureAdultsRecent evidence
2019
Variation of growth characteristics of pneumococcus with environmental conditions
Tóthpál A, Desobry K, Joshi SS, Wyllie AL, Weinberger DM. Variation of growth characteristics of pneumococcus with environmental conditions. BMC Microbiology 2019, 19: 304. PMID: 31878880, PMCID: PMC6933730, DOI: 10.1186/s12866-019-1671-8.Peer-Reviewed Original Research
2017
Sequencing of the variable region of rpsB to discriminate between Streptococcus pneumoniae and other streptococcal species
Wyllie AL, Pannekoek Y, Bovenkerk S, van Engelsdorp Gastelaars J, Ferwerda B, van de Beek D, Sanders EAM, Trzciński K, van der Ende A. Sequencing of the variable region of rpsB to discriminate between Streptococcus pneumoniae and other streptococcal species. Open Biology 2017, 7: 170074. PMID: 28931649, PMCID: PMC5627049, DOI: 10.1098/rsob.170074.Peer-Reviewed Original ResearchConceptsSevere streptococcal diseaseUpper respiratory tractHuman upper respiratory tractSerotype-specific assaysMolecular assaysStreptococcal speciesNon-typeable pneumococciStreptococcal diseaseAsymptomatic individualsFalse-positive resultsRespiratory tractPneumococcal isolatesCarriage isolatesStreptococcal isolatesStreptococcus pneumoniaeLack of specificityStreptococciPositive resultsPneumococciDiseaseCarriageAssaysIsolatesVast majorityMeningitis
2016
Molecular surveillance of nasopharyngeal carriage of Streptococcus pneumoniae in children vaccinated with conjugated polysaccharide pneumococcal vaccines
Wyllie AL, Wijmenga-Monsuur AJ, van Houten MA, Bosch AATM, Groot JA, van Engelsdorp Gastelaars J, Bruin JP, Bogaert D, Rots NY, Sanders EAM, Trzciński K. Molecular surveillance of nasopharyngeal carriage of Streptococcus pneumoniae in children vaccinated with conjugated polysaccharide pneumococcal vaccines. Scientific Reports 2016, 6: 23809. PMID: 27046258, PMCID: PMC4820691, DOI: 10.1038/srep23809.Peer-Reviewed Original ResearchConceptsPneumococcal conjugate vaccinePolysaccharide pneumococcal vaccineVaccine-targeted serotypesStreptococcus pneumoniae carriageCross-sectional surveillanceVaccine serotypes 4Number of serotypesPneumococcal surveillancePneumococcal vaccinePneumoniae carriageUnvaccinated individualsConjugate vaccineNasopharyngeal carriagePneumococcal diseaseVaccine effectsNasopharyngeal samplesConventional diagnostic methodsSurveillance studyS. pneumoniaeStreptococcus pneumoniaeSerotype detectionMolecular surveillanceHidden circulationSerotypesDiagnostic methodsDevelopment of the Nasopharyngeal Microbiota in Infants with Cystic Fibrosis
Prevaes SM, de Winter-de Groot KM, Janssens HM, de Steenhuijsen Piters WA, Tramper-Stranders GA, Wyllie AL, Hasrat R, Tiddens HA, van Westreenen M, van der Ent CK, Sanders EA, Bogaert D. Development of the Nasopharyngeal Microbiota in Infants with Cystic Fibrosis. American Journal Of Respiratory And Critical Care Medicine 2016, 193: 504-515. PMID: 26492486, DOI: 10.1164/rccm.201509-1759oc.Peer-Reviewed Original ResearchMeSH KeywordsAnti-Bacterial AgentsBurkholderiaBurkholderia InfectionsCarrier StateCase-Control StudiesCohort StudiesCorynebacteriumCorynebacterium InfectionsCystic FibrosisDNA, BacterialEnterobacteriaceaeEnterobacteriaceae InfectionsFemaleHaemophilus InfectionsHaemophilus influenzaeHumansInfantInfant, NewbornMaleMicrobiotaMoraxellaMoraxellaceae InfectionsNasopharynxProspective StudiesReal-Time Polymerase Chain ReactionRNA, Ribosomal, 16SStaphylococcal InfectionsStaphylococcus aureusStreptococcal InfectionsStreptococcus mitisConceptsHealthy control subjectsControl subjectsMonths of lifeMonths of ageCystic fibrosisAntibiotic useMicrobiota profilesAge-matched healthy control subjectsEarly structural lung diseaseNasopharyngeal microbiota profilesNasopharynx of infantsProspective cohort studyStructural lung diseaseTime of diagnosisMoraxella sppPotential respiratory pathogensRespiratory symptomsAntibiotic therapyCohort studyPulmonary infectionLung diseaseNasopharyngeal microbiotaRespiratory pathogensHaemophilus influenzaeNasopharynx samples
2014
Streptococcus pneumoniae in Saliva of Dutch Primary School Children
Wyllie AL, Chu ML, Schellens MH, van Engelsdorp Gastelaars J, Jansen MD, van der Ende A, Bogaert D, Sanders EA, Trzciński K. Streptococcus pneumoniae in Saliva of Dutch Primary School Children. PLOS ONE 2014, 9: e102045. PMID: 25013895, PMCID: PMC4094488, DOI: 10.1371/journal.pone.0102045.Peer-Reviewed Original ResearchConceptsPneumoniae carriagePneumococcal carriagePneumococcal strainsMultiple pneumococcal strainsStreptococcus pneumoniae carriageS. pneumoniae carriageS. pneumoniae strainsNumber of serotypesDutch primary school childrenNasopharyngeal samplingSchool-aged childrenPneumococcal detectionSurveillance studyS. pneumoniaePneumoniae strainsStreptococcus pneumoniaeSerotype composition