2024
Serological Profiling of Pneumococcal Proteins Reveals Unique Patterns of Acquisition, Maintenance, and Waning of Antibodies Throughout Life
He S, Voß F, Nicolaie M, Brummelman J, van de Garde M, Bijvank E, Poelen M, Wijmenga-Monsuur A, Wyllie A, Trzciński K, Van Beek J, Rots N, Hartog G, Hammerschmidt S, van C. Serological Profiling of Pneumococcal Proteins Reveals Unique Patterns of Acquisition, Maintenance, and Waning of Antibodies Throughout Life. The Journal Of Infectious Diseases 2024, jiae216. PMID: 38679601, DOI: 10.1093/infdis/jiae216.Peer-Reviewed Original ResearchIgG levelsPneumococcal proteinsAntibody responseLow IgG levelsSerum IgG levelsWaning of antibodiesIncreased IgG levelsAdults aged >Age-targeted interventionsProtein-specific antibody responsesPneumococcal carriageOlder adults aged >Streptococcus pneumoniaeSerological profileOlder infantsOlder ageOlder childrenOlder adultsAntibodiesAgeCarriageAdultsChildrenUnique pattern
2023
Persistence 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
2020
Upper 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
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 on Streptococcus pneumoniae carriage in non-elderly adults; little evidence for pneumococcal circulation independent from the reservoir in children
Wyllie AL, Rümke LW, Arp K, Bosch AA, Bruin JP, Rots NY, Wijmenga-Monsuur AJ, Sanders EA, Trzciński K. Molecular surveillance on Streptococcus pneumoniae carriage in non-elderly adults; little evidence for pneumococcal circulation independent from the reservoir in children. Scientific Reports 2016, 6: 34888. PMID: 27713565, PMCID: PMC5054371, DOI: 10.1038/srep34888.Peer-Reviewed Original ResearchConceptsCarriage rateNasopharyngeal swabsOral samplesUpper respiratory tract samplesVaccine herd effectsStreptococcus pneumoniae carriageRespiratory tract samplesHigh carriage rateNon-elderly adultsS. pneumoniae detectionAge-associated differencesEntire adult populationChildless adultsSerotype replacementPneumoniae carriagePneumococcal carriageTract samplesCarriage frequencyStreptococcus pneumoniaeAdult populationSerotype 3Gold standard culture methodMolecular surveillanceMolecular testsGold standardMolecular 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 methods
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
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
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