2016
Density, Serotype Diversity, and Fitness of Streptococcus pneumoniae in Upper Respiratory Tract Cocolonization With Nontypeable Haemophilus influenzae
Lewnard JA, Huppert A, Givon-Lavi N, Pettigrew MM, Regev-Yochay G, Dagan R, Weinberger DM. Density, Serotype Diversity, and Fitness of Streptococcus pneumoniae in Upper Respiratory Tract Cocolonization With Nontypeable Haemophilus influenzae. The Journal Of Infectious Diseases 2016, 214: 1411-1420. PMID: 27540112, PMCID: PMC5079371, DOI: 10.1093/infdis/jiw381.Peer-Reviewed Original ResearchConceptsNontypeable Haemophilus influenzaeNTHi colonizationPneumococcal serotypesChildren 2Haemophilus influenzaeStreptococcus pneumoniaeUpper respiratory tract carriageSerotype diversityComplex otitis mediaNasopharyngeal pneumococcal carriagePneumococcal conjugate vaccineImmune-evasive phenotypePneumococcal serotype diversityNTHi carriageConjugate vaccinePneumococcal carriageOtitis mediaStudy visitNeutrophil resistanceCapsular thicknessLogistic regressionDensity associationsCarriageSerotypesColonization density
2015
Epidemiological Markers for Interactions Among Streptococcus pneumoniae, Haemophilus influenzae, and Staphylococcus aureus in Upper Respiratory Tract Carriage
Lewnard JA, Givon-Lavi N, Huppert A, Pettigrew MM, Regev-Yochay G, Dagan R, Weinberger DM. Epidemiological Markers for Interactions Among Streptococcus pneumoniae, Haemophilus influenzae, and Staphylococcus aureus in Upper Respiratory Tract Carriage. The Journal Of Infectious Diseases 2015, 213: 1596-1605. PMID: 26704617, PMCID: PMC4837906, DOI: 10.1093/infdis/jiv761.Peer-Reviewed Original ResearchMeSH KeywordsCarrier StateChild, PreschoolFemaleHaemophilus InfectionsHaemophilus influenzaeHeptavalent Pneumococcal Conjugate VaccineHumansInfantIsraelLongitudinal StudiesMalePneumococcal InfectionsRespiratory Tract InfectionsRisk FactorsStaphylococcal InfectionsStaphylococcus aureusStreptococcus pneumoniaeVaccines, ConjugateConceptsPneumococcal serotype replacementH. influenzaeSerotype replacementS. pneumoniaeHaemophilus influenzaeStreptococcus pneumoniaePneumococcal conjugate vaccine trialUpper respiratory tract carriagePneumococcal vaccine introductionS. aureus carriageMonths of ageStaphylococcus aureusPCV7 recipientsAureus carriageVaccine introductionVaccine trialsCarriage patternsConfounding factorsClinical interventionsInfluenzaeEpidemiological markersBedouin childrenPneumoniaeCarriageS. aureusStreptococcus pneumoniae biofilm formation and dispersion during colonization and disease
Chao Y, Marks LR, Pettigrew MM, Hakansson AP. Streptococcus pneumoniae biofilm formation and dispersion during colonization and disease. Frontiers In Cellular And Infection Microbiology 2015, 4: 194. PMID: 25629011, PMCID: PMC4292784, DOI: 10.3389/fcimb.2014.00194.Peer-Reviewed Original ResearchConceptsNasopharyngeal environmentConcomitant virus infectionPneumococcal biofilmsMiddle ear infectionRespiratory epithelial cellsMillions of infectionsPneumococcal biofilm formationPneumococcal diseaseEar infectionsSterile sitesInvasive diseasePneumococcal colonizationHigh prevalenceVirus infectionDisease processDistinct phenotypic propertiesMucosal surfacesStreptococcus pneumoniaeVaccine escapeHuman nasopharynxDiseaseEpithelial cellsInfectionPneumococciAntibiotic resistance
2012
Upper Respiratory Tract Microbial Communities, Acute Otitis Media Pathogens, and Antibiotic Use in Healthy and Sick Children
Pettigrew MM, Laufer AS, Gent JF, Kong Y, Fennie KP, Metlay JP. Upper Respiratory Tract Microbial Communities, Acute Otitis Media Pathogens, and Antibiotic Use in Healthy and Sick Children. Applied And Environmental Microbiology 2012, 78: 6262-6270. PMID: 22752171, PMCID: PMC3416608, DOI: 10.1128/aem.01051-12.Peer-Reviewed Original ResearchConceptsAcute otitis mediaAntibiotic useS. pneumoniaeHealthy childrenM. catarrhalisH. influenzaeAcute otitis media pathogensConcurrent acute otitis mediaUpper respiratory tract infectionRespiratory tract infectionsOtitis media pathogensUpper respiratory tractCross-sectional studyYears of ageAOM pathogensTract infectionsOtitis mediaMoraxella catarrhalisRespiratory tractReal-time PCRNasal swabsSick childrenPrevention strategiesHaemophilus influenzaeStreptococcus pneumoniaeVirulence of Streptococcus pneumoniae serotype 6C in experimental otitis media
Sabharwal V, Figueira M, Pelton SI, Pettigrew MM. Virulence of Streptococcus pneumoniae serotype 6C in experimental otitis media. Microbes And Infection 2012, 14: 712-718. PMID: 22414497, PMCID: PMC3382049, DOI: 10.1016/j.micinf.2012.02.008.Peer-Reviewed Original ResearchConceptsAcute otitis mediaExperimental otitis mediaPneumococcal conjugate vaccineOtitis mediaSerotype 6CInvasive pneumococcal diseaseOverall carriage rateLow-density infectionsMiddle ear infectionStreptococcus pneumoniae serotype 6CReplacement serotypesPneumococcal diseaseVaccine serotypesConjugate vaccineNonvaccine serotypesCarriage rateEar infectionsNasopharyngeal colonizationChinchilla modelStreptococcus pneumoniaeHost defenseSerotypesDisease potentialInfectionDisease
2011
Viral-Bacterial Interactions and Risk of Acute Otitis Media Complicating Upper Respiratory Tract Infection
Pettigrew MM, Gent JF, Pyles RB, Miller AL, Nokso-Koivisto J, Chonmaitree T. Viral-Bacterial Interactions and Risk of Acute Otitis Media Complicating Upper Respiratory Tract Infection. Journal Of Clinical Microbiology 2011, 49: 3750-3755. PMID: 21900518, PMCID: PMC3209086, DOI: 10.1128/jcm.01186-11.Peer-Reviewed Original ResearchMeSH KeywordsChild, PreschoolCohort StudiesComorbidityHaemophilus influenzaeHuman bocavirusHumansInfantMetapneumovirusMicrobial InteractionsMoraxella catarrhalisOtitis MediaPolymerase Chain ReactionProspective StudiesRespiratory Syncytial VirusesRespiratory Tract InfectionsRisk AssessmentStreptococcus pneumoniaeConceptsUpper respiratory tract infectionAcute otitis mediaRespiratory tract infectionsRespiratory syncytial virusOtitis mediaOtitis media riskTract infectionsViral loadSyncytial virusHaemophilus influenzaeStreptococcus pneumoniaeRespiratory Syncytial Virus LoadMedium-risk factorsRepeated-measures logistic regressionRSV viral loadViral-bacterial interactionsHigh viral loadSpecific virusesBacterial pathogensChildren ages 6Common complicationRespiratory virusesMedium riskProspective studyHuman bocavirusStreptococcus pneumoniae Clonal Complex 199: Genetic Diversity and Tissue-Specific Virulence
Thomas JC, Figueira M, Fennie KP, Laufer AS, Kong Y, Pichichero ME, Pelton SI, Pettigrew MM. Streptococcus pneumoniae Clonal Complex 199: Genetic Diversity and Tissue-Specific Virulence. PLOS ONE 2011, 6: e18649. PMID: 21533186, PMCID: PMC3077395, DOI: 10.1371/journal.pone.0018649.Peer-Reviewed Original ResearchConceptsChinchilla modelHeptavalent pneumococcal conjugate vaccinePneumococcal conjugate vaccineSerotype 19A isolatesMiddle ear isolatesS. pneumoniae isolatesLong-term effectivenessConjugate vaccinePneumococcal diseaseOtitis mediaVaccinated populationReplacement diseaseBlood isolatesInvasive diseaseCarriage isolatesPneumoniae isolatesCerebrospinal fluidEar isolatesFuture vaccinesImportant causeStreptococcus pneumoniaeMiddle earDiseaseVirulence potentialVaccineMicrobial Communities of the Upper Respiratory Tract and Otitis Media in Children
Laufer AS, Metlay JP, Gent JF, Fennie KP, Kong Y, Pettigrew MM. Microbial Communities of the Upper Respiratory Tract and Otitis Media in Children. MBio 2011, 2: 10.1128/mbio.00245-10. PMID: 21285435, PMCID: PMC3031303, DOI: 10.1128/mbio.00245-10.Peer-Reviewed Original ResearchConceptsOtitis mediaUpper respiratory tractS. pneumoniaeRespiratory tractOtitis media treatmentRespiratory virus seasonS. pneumoniae colonizationOtitis media pathogensCross-sectional studyOtitis media susceptibilityPneumoniae colonizationDecreased riskPneumococcal colonizationNasal swabsFrequent causePrevention strategiesStreptococcus pneumoniaeDemographic dataProtective floraPneumoniaeSwabsChildrenCausal pathwaysTractRisk
2009
Multilocus Sequence Typing and Pulsed Field Gel Electrophoresis of Otitis Media Causing Pathogens
Thomas JC, Pettigrew MM. Multilocus Sequence Typing and Pulsed Field Gel Electrophoresis of Otitis Media Causing Pathogens. Methods In Molecular Biology 2009, 493: 179-190. PMID: 18839348, PMCID: PMC3581352, DOI: 10.1007/978-1-59745-523-7_11.Peer-Reviewed Original ResearchConceptsOtitis mediaMolecular epidemiologyMultilocus sequence typingMoraxella catarrhalisHaemophilus influenzaeStreptococcus pneumoniaeSequence typingPulsed-Field Gel ElectrophoresisEpidemiologyBacterial pathogensField gel electrophoresisType of studyResearch settingsCharacterization of isolatesPathogensCatarrhalisInfluenzaePneumoniae
2008
Microbial Interactions during Upper Respiratory Tract Infections - Volume 14, Number 10—October 2008 - Emerging Infectious Diseases journal - CDC
Pettigrew MM, Gent JF, Revai K, Patel JA, Chonmaitree T. Microbial Interactions during Upper Respiratory Tract Infections - Volume 14, Number 10—October 2008 - Emerging Infectious Diseases journal - CDC. Emerging Infectious Diseases 2008, 14: 1584-1591. PMID: 18826823, PMCID: PMC2609881, DOI: 10.3201/eid1410.080119.Peer-Reviewed Original ResearchMeSH KeywordsChild, PreschoolCohort StudiesFemaleHaemophilus InfectionsHaemophilus influenzaeHumansInfantMaleMoraxella catarrhalisMoraxellaceae InfectionsNasopharynxOtitis MediaProspective StudiesRespiratory Tract InfectionsStaphylococcal InfectionsStaphylococcus aureusStreptococcus pneumoniaeSuperinfectionConceptsUpper respiratory tract infectionH. influenzaeInfectious Diseases journal - CDCRespiratory tract infectionsS. pneumoniae colonizationHealthy children 6Months of ageS. aureusProspective cohortTract infectionsPneumoniae colonizationVaccination strategiesAntimicrobial therapyMoraxella catarrhalisChildren 6M. catarrhalisS. pneumoniaeHaemophilus influenzaeStreptococcus pneumoniaeBacterial infectionsSpecific bacterial speciesInfluenzaeLikelihood of colonizationCatarrhalisStaphylococcus aureus
2006
Variation in the Presence of Neuraminidase Genes among Streptococcus pneumoniae Isolates with Identical Sequence Types
Pettigrew MM, Fennie KP, York MP, Daniels J, Ghaffar F. Variation in the Presence of Neuraminidase Genes among Streptococcus pneumoniae Isolates with Identical Sequence Types. Infection And Immunity 2006, 74: 3360-3365. PMID: 16714565, PMCID: PMC1479257, DOI: 10.1128/iai.01442-05.Peer-Reviewed Original ResearchConceptsPneumoniae isolatesSequence typesUpper respiratory tractNeuraminidase geneS. pneumoniae isolatesVirulence determinantsStreptococcus pneumoniae isolatesIdentical sequence typesYoung childrenAdditional virulence determinantsSialic acid-containing substratesCapsule typesMultilocus sequence typesOtitis mediaInvasive diseaseRespiratory tractCarriage isolatesPneumococcal clonesSame sequence typePneumococcal strainsImportant causeStreptococcus pneumoniaeMiddle earDifferent tissue sourcesPneumococcal neuraminidase
2003
Molecular epidemiology of Streptococcus pneumoniae mediated otitis media.
McCoy S, Pettigrew M. Molecular epidemiology of Streptococcus pneumoniae mediated otitis media. Frontiers In Bioscience-Landmark 2003, 8: e87-93. PMID: 12456346, DOI: 10.2741/961.Peer-Reviewed Original Research