2023
2604. Contact With School-Aged Children is a Major Risk Factor for Pneumococcal Colonization in Older Adults
Wyllie A, Yolda-Carr D, Hislop M, Mbodj S, Kennedy H, McLaughlin M, Wurst L, Waghela P, Peno C, Alexander-Parrish R, Arguedas A, Gessner B, Weinberger D. 2604. Contact With School-Aged Children is a Major Risk Factor for Pneumococcal Colonization in Older Adults. Open Forum Infectious Diseases 2023, 10: ofad500.2218. PMCID: PMC10679235, DOI: 10.1093/ofid/ofad500.2218.Peer-Reviewed Original ResearchPneumococcal conjugate vaccineOlder adultsTime pointsRisk factorsPneumococcal colonizationAdult transmissionTransmission of pneumococciMajor risk factorRecent contactYear oldsNon-institutionalized individualsYears of ageGrant/research supportSame time pointsPneumococcal acquisitionConjugate vaccineSchool-Aged ChildrenElevated prevalenceYoung school-age childrenHealth statusYoung contactsSaliva samplesMedical directorsSample adultsPneumococciSaliva 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 ResearchConceptsNasopharyngeal 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
2021
1321. Acquisition and Transmission of Streptococcus pneumoniae in Individuals Over the Age of 60 Years Residing in New Haven, CT, USA
Wyllie A, Mbodj S, Yolda-Carr D, Thammavongsa D, Waghela P, Nakahata M, Vega N, York A, Allicock O, Alexander-Parrish R, Arguedas A, Gessner B, Weinberger D, Hislop M. 1321. Acquisition and Transmission of Streptococcus pneumoniae in Individuals Over the Age of 60 Years Residing in New Haven, CT, USA. Open Forum Infectious Diseases 2021, 8: 749-749. PMCID: PMC8689704, DOI: 10.1093/ofid/ofab466.1513.Peer-Reviewed Original ResearchPneumococcal carriageSaliva samplesOlder adultsPreventative public health measuresPneumococcal conjugate vaccineNew Haven areaPublic health measuresPneumococcal acquisitionPneumococcal diseaseConjugate vaccinePneumococcal transmissionStudy enrollmentMedical historyImportant burdenDemonstrate evidenceStreptococcus pneumoniaeHealth measuresMultiple timepointsTime pointsWeeksAdultsCOVID-19 pandemicAgeHigh ratePneumococci
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
2015
Carriage of Streptococcus pneumoniae in Aged Adults with Influenza-Like-Illness
Krone CL, Wyllie AL, van Beek J, Rots NY, Oja AE, Chu ML, Bruin JP, Bogaert D, Sanders EA, Trzciński K. Carriage of Streptococcus pneumoniae in Aged Adults with Influenza-Like-Illness. PLOS ONE 2015, 10: e0119875. PMID: 25789854, PMCID: PMC4366201, DOI: 10.1371/journal.pone.0119875.Peer-Reviewed Original ResearchConceptsS. pneumoniaeStreptococcus pneumoniaeCarriage detectionSaliva samplesPneumococcal conjugated vaccineStudy time pointsPCV13 serotypesPneumococcal diseaseCarriage prevalenceNasopharyngeal colonisationNasopharyngeal swabsConjugated vaccineNasopharyngealAged adultsPneumococciTime pointsPneumoniaeCarriageInfantsConventional cultureIllnessSalivaInfluenzaDiseaseSerotypes
2013
Superiority of Trans-Oral over Trans-Nasal Sampling in Detecting Streptococcus pneumoniae Colonization in Adults
Trzciński K, Bogaert D, Wyllie A, Chu ML, van der Ende A, Bruin JP, van den Dobbelsteen G, Veenhoven RH, Sanders EA. Superiority of Trans-Oral over Trans-Nasal Sampling in Detecting Streptococcus pneumoniae Colonization in Adults. PLOS ONE 2013, 8: e60520. PMID: 23555985, PMCID: PMC3610877, DOI: 10.1371/journal.pone.0060520.Peer-Reviewed Original ResearchConceptsS. pneumoniaeLive pneumococciDiagnostic stepsTrans-nasal approachStreptococcus pneumoniae colonizationInitial diagnostic stepPneumoniae colonizationNasopharyngeal samplesPneumococcal colonizationNasopharyngeal colonizationStreptococcus pneumoniaeHuman nasopharynxPneumococciPneumoniaeCell harvestAdultsQPCRQPCR resultsMain reservoirMolecular methods