2022
Impact of antibiotics on off-target infant gut microbiota and resistance genes in cohort studies
Lebeaux RM, Madan JC, Nguyen QP, Coker MO, Dade EF, Moroishi Y, Palys TJ, Ross BD, Pettigrew MM, Morrison HG, Karagas MR, Hoen AG. Impact of antibiotics on off-target infant gut microbiota and resistance genes in cohort studies. Pediatric Research 2022, 92: 1757-1766. PMID: 35568730, PMCID: PMC9659678, DOI: 10.1038/s41390-022-02104-w.Peer-Reviewed Original ResearchMeSH KeywordsAnti-Bacterial AgentsChildChild, PreschoolCohort StudiesEscherichia coliGastrointestinal MicrobiomeHumansInfantMicrobiotaConceptsAntibiotic exposureCohort studyDay careDay care attendanceInfant gut microbiotaAntibiotic resistance genesCare attendanceImpact of antibioticsAntibiotic useStool samplesGut microbiotaInfantsGut microbiomeStudy designBacteroides fragilisAntibioticsBackgroundYoung childrenNovel findingsSubsequent exposureExposureFirst yearFurther investigationBaselineResistance genesCareComparison of the Respiratory Resistomes and Microbiota in Children Receiving Short versus Standard Course Treatment for Community-Acquired Pneumonia
Pettigrew MM, Kwon J, Gent JF, Kong Y, Wade M, Williams DJ, Creech CB, Evans S, Pan Q, Walter EB, Martin JM, Gerber JS, Newland JG, Hofto ME, Staat MA, Fowler VG, Chambers HF, Huskins WC. Comparison of the Respiratory Resistomes and Microbiota in Children Receiving Short versus Standard Course Treatment for Community-Acquired Pneumonia. MBio 2022, 13: e00195-22. PMID: 35323040, PMCID: PMC9040816, DOI: 10.1128/mbio.00195-22.Peer-Reviewed Original ResearchMeSH KeywordsAnti-Bacterial AgentsBeta-LactamsChildChild, PreschoolCommunity-Acquired InfectionsHumansInfantMicrobiotaPneumoniaConceptsCommunity-acquired pneumoniaShort-course strategyBeta-lactam therapyTreatment strategiesAntibiotic useRespiratory microbiomePediatric community-acquired pneumoniaDays of antibioticsShorter antibiotic coursesStandard-strategy groupDays of therapyStandard treatment strategyAntibiotic resistanceAdditional rationaleEffectiveness of interventionsImpact of durationAntibiotic coursesThroat swabsCourse strategyAntibiotic treatmentPediatric pneumoniaCourse treatmentLow prevalencePneumoniaAntibiotic resistance determinantsGastrointestinal Microbiome Disruption and Antibiotic-Associated Diarrhea in Children Receiving Antibiotic Therapy for Community-Acquired Pneumonia
Kwon J, Kong Y, Wade M, Williams DJ, Creech CB, Evans S, Walter EB, Martin JM, Gerber JS, Newland JG, Hofto ME, Staat MA, Chambers HF, Fowler VG, Huskins WC, Pettigrew M. Gastrointestinal Microbiome Disruption and Antibiotic-Associated Diarrhea in Children Receiving Antibiotic Therapy for Community-Acquired Pneumonia. The Journal Of Infectious Diseases 2022, 226: 1109-1119. PMID: 35249113, PMCID: PMC9492313, DOI: 10.1093/infdis/jiac082.Peer-Reviewed Original ResearchConceptsAAD groupAntibiotic-Associated DiarrheaCommunity-Acquired PneumoniaCommon side effectsStudy days 1Days of diarrheaPatient characteristicsAntibiotic therapyNineteen childrenStool samplesSide effectsDay 1Microbiome disruptionMicrobiota profilesGastrointestinal microbiotaMicrobiota characteristicsDiarrheaBacteroides speciesPneumoniaChildrenAntibioticsΒ-lactamsAADBaseline abundanceDysbiosisShort- vs Standard-Course Outpatient Antibiotic Therapy for Community-Acquired Pneumonia in Children
Williams DJ, Creech CB, Walter EB, Martin JM, Gerber JS, Newland JG, Howard L, Hofto ME, Staat MA, Oler RE, Tuyishimire B, Conrad TM, Lee MS, Ghazaryan V, Pettigrew MM, Fowler VG, Chambers HF, Zaoutis TE, Evans S, Huskins WC, Team A. Short- vs Standard-Course Outpatient Antibiotic Therapy for Community-Acquired Pneumonia in Children. JAMA Pediatrics 2022, 176: 253-261. PMID: 35040920, PMCID: PMC8767493, DOI: 10.1001/jamapediatrics.2021.5547.Peer-Reviewed Original ResearchMeSH KeywordsAnti-Bacterial AgentsChildChild, PreschoolCommunity-Acquired InfectionsDouble-Blind MethodFemaleHumansMaleOutpatientsPneumoniaConceptsChildhood community-acquired pneumoniaAntibiotic-associated adverse effectsShort-course strategyClinical responseAdverse effectsDouble-blind placebo-controlled clinical trialPlacebo-controlled clinical trialEnd pointDays of antibioticsEarly clinical improvementInadequate clinical responseOutpatient antibiotic therapyShorter antibiotic durationsSimilar clinical responseCommunity-Acquired PneumoniaPrimary end pointComposite end pointResolution of symptomsAntibiotic treatment strategiesSubset of childrenAntibiotic daysAntibiotic durationClinical improvementAntibiotic therapyInitial treatment
2020
Dolosigranulum pigrum Cooperation and Competition in Human Nasal Microbiota
Brugger SD, Eslami SM, Pettigrew MM, Escapa IF, Henke MT, Kong Y, Lemon KP. Dolosigranulum pigrum Cooperation and Competition in Human Nasal Microbiota. MSphere 2020, 5: 10.1128/msphere.00852-20. PMID: 32907957, PMCID: PMC7485692, DOI: 10.1128/msphere.00852-20.Peer-Reviewed Original ResearchConceptsMicrobe-microbe interactionsHuman nasal microbiotaGenomic analysisPhenotypic interactionsBiosynthetic gene clusterSmall genomesNasal microbiotaGene clusterAccessory genomeKey nutrientsNew insightsGenomic capacityBacterial residentsPathogenic speciesNasal microbiota compositionBeneficial bacteriumFunctional assaysDiverse repertoireHuman hostGenomeSpeciesAcid productionMicrobiotaNasal bacteriaBacteria
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 densityAssociation of sputum microbiota profiles with severity of community-acquired pneumonia in children
Pettigrew MM, Gent JF, Kong Y, Wade M, Gansebom S, Bramley AM, Jain S, Arnold SL, McCullers JA. Association of sputum microbiota profiles with severity of community-acquired pneumonia in children. BMC Infectious Diseases 2016, 16: 317. PMID: 27391033, PMCID: PMC4939047, DOI: 10.1186/s12879-016-1670-4.Peer-Reviewed Original ResearchConceptsCommunity-acquired pneumoniaCAP severityMicrobiota profilesClinical courseRespiratory microbiotaPediatric community-acquired pneumoniaIntensive care unit admissionNasopharyngeal/oropharyngeal samplesCare unit admissionOdds of lengthInduced sputum samplesRespiratory tract microbiotaOP samplesRibosomal RNA sequencingUnit admissionDecreased oddsSputum samplesChildren 6Oropharyngeal samplesMicrobiota influenceChildren 5Logistic regressionSputumSeverityPneumonia
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. aureus
2012
Bacterial and viral interactions within the nasopharynx contribute to the risk of acute otitis media
Ruohola A, Pettigrew MM, Lindholm L, Jalava J, Räisänen KS, Vainionpää R, Waris M, Tähtinen PA, Laine MK, Lahti E, Ruuskanen O, Huovinen P. Bacterial and viral interactions within the nasopharynx contribute to the risk of acute otitis media. Journal Of Infection 2012, 66: 247-254. PMID: 23266462, PMCID: PMC3571106, DOI: 10.1016/j.jinf.2012.12.002.Peer-Reviewed Original ResearchConceptsRisk of AOMAcute otitis mediaMiddle ear effusionAOM groupRespiratory virusesAOM pathogensAcute symptomsOtitis mediaEar effusionM. catarrhalisAcute inflammatory signsNasopharyngeal bacterial colonizationRespiratory tract infectionsOtoscopic signsTract infectionsInflammatory signsNasopharyngeal samplesSymptomatic childrenNasopharyngeal bacteriaH. influenzaePneumatic otoscopyS. pneumoniaeViral interactionsBacterial colonizationEffusionUpper 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 bocavirusMicrobial 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
Molecular Epidemiology of Pediatric Pneumococcal Empyema from 2001 to 2007 in Utah
Byington CL, Hulten KG, Ampofo K, Sheng X, Pavia AT, Blaschke AJ, Pettigrew M, Korgenski K, Daly J, Mason EO. Molecular Epidemiology of Pediatric Pneumococcal Empyema from 2001 to 2007 in Utah. Journal Of Clinical Microbiology 2009, 48: 520-525. PMID: 20018815, PMCID: PMC2815589, DOI: 10.1128/jcm.01200-09.Peer-Reviewed Original ResearchConceptsUtah childrenPCV-7Nonvaccine serotypesPneumococcal empyemaMolecular epidemiologyStreptococcus pneumoniae serotype 1Pneumococcal conjugate vaccineSerotype 1Sequence typesCommon sequence typesEmpyema ratesSerotype replacementConjugate vaccineSerotype switchReplacement diseasePPE casesEmpyemaChildrenSerotypesHigh rateEpidemiologyLicensureMLSTVaccineIncidence
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
2007
Respiratory symptoms among infants at risk for asthma: association with surfactant protein A haplotypes
Pettigrew MM, Gent JF, Zhu Y, Triche EW, Belanger KD, Holford TR, Bracken MB, Leaderer BP. Respiratory symptoms among infants at risk for asthma: association with surfactant protein A haplotypes. BMC Medical Genomics 2007, 8: 15. PMID: 17407567, PMCID: PMC1852548, DOI: 10.1186/1471-2350-8-15.Peer-Reviewed Original ResearchConceptsPersistent coughSurfactant protein ARespiratory symptomsWhite infantsClinician-diagnosed asthmaInfant respiratory symptomsRespiratory symptom frequencyRisk of wheezeCohort of infantsSingle nucleotide polymorphismsMonths of ageQuarterly telephone interviewsLogistic regression modelsRace/ethnicityStudy infantsNewborn infantsSymptom frequencyInfant's birthStandardized questionnaireCoughWheezeAsthmaInfantsTelephone interviewsOlder children
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 neuraminidasePredictors for Haemophilus influenzae Colonization, Antibiotic Resistance and for Sharing an Identical Isolate Among Children Attending 16 Licensed Day-Care Centers in Michigan
Barbosa-Cesnik C, Farjo RS, Patel M, Gilsdorf J, McCoy SI, Pettigrew MM, Marrs C, Foxman B. Predictors for Haemophilus influenzae Colonization, Antibiotic Resistance and for Sharing an Identical Isolate Among Children Attending 16 Licensed Day-Care Centers in Michigan. The Pediatric Infectious Disease Journal 2006, 25: 219-223. PMID: 16511383, DOI: 10.1097/01.inf.0000202130.78540.28.Peer-Reviewed Original ResearchConceptsDay care centersH. influenzae colonizationNontypable H. influenzaeH. influenzaeOtitis mediaColonized childrenAntibiotic resistanceLicensed day care centersSame day care centerHaemophilus influenzae colonizationModifiable risk factorsRisk factor questionnaireH. influenzae isolatesNontypable Haemophilus influenzaeDay care center directorsIdentical isolatesInfluenzae isolatesPacifier useThroat swabsHygiene habitsRisk factorsTobacco smokeImportant causeHaemophilus influenzaeOverall colonization rate
2005
Genomic Subtraction Followed by Dot Blot Screening of Streptococcus pneumoniae Clinical and Carriage Isolates Identifies Genetic Differences Associated with Strains That Cause Otitis Media
Pettigrew MM, Fennie KP. Genomic Subtraction Followed by Dot Blot Screening of Streptococcus pneumoniae Clinical and Carriage Isolates Identifies Genetic Differences Associated with Strains That Cause Otitis Media. Infection And Immunity 2005, 73: 2805-2811. PMID: 15845484, PMCID: PMC1087362, DOI: 10.1128/iai.73.5.2805-2811.2005.Peer-Reviewed Original ResearchConceptsMiddle ear isolatesEar isolatesOtitis mediaMiddle earOtitis media pathogenesisCerebrospinal fluid isolatesBacterial otitis mediaStreptococcus pneumoniae strainsMolecular epidemiological approachSpecific bacterial factorsCarriage isolatesPneumoniae strainsBacterial factorsDot-blot screeningBloodBrucella melitensisEpidemiological approachMeningitisFurther studiesYoung childrenPrecise roleCarriageMedium virulenceIsolatesEar
2004
Diversity and sharing of Haemophilus influenzae strains colonizing healthy children attending day-care centers
FARJO RS, FOXMAN B, PATEL MJ, ZHANG L, PETTIGREW MM, MCCOY SI, MARRS CF, GILSDORF JR. Diversity and sharing of Haemophilus influenzae strains colonizing healthy children attending day-care centers. The Pediatric Infectious Disease Journal 2004, 23: 41-46. PMID: 14743045, DOI: 10.1097/01.inf.0000106981.89572.d1.Peer-Reviewed Original ResearchMeSH KeywordsCarrier StateChild Day Care CentersChild, PreschoolCohort StudiesColony Count, MicrobialDNA, BacterialElectrophoresis, Gel, Pulsed-FieldFemaleGenotypeHaemophilus InfectionsHaemophilus influenzaeHumansIncidenceMaleMass ScreeningMichiganOtitis MediaPolymerase Chain ReactionReference ValuesRisk AssessmentSerotypingConceptsDay care centersH. influenzaeHealthy childrenH. influenzae organismsAcute otitis mediaH. influenzae colonizationH. influenzae strainsUnique strainsEnterobacterial repetitive intergenic consensus PCRThroat culturesOtitis mediaInitial screening techniqueNasopharyngeal colonizationPrevalence ratesColonizing strainsHaemophilus influenzaeHeterogeneity of strainInfluenzaeConsensus PCRRate of colonizationChildrenField gel electrophoresisSame strainPathogenic microorganismsEvidence of sharing