2023
Typhoid fever
Meiring J, Khanam F, Basnyat B, Charles R, Crump J, Debellut F, Holt K, Kariuki S, Mugisha E, Neuzil K, Parry C, Pitzer V, Pollard A, Qadri F, Gordon M. Typhoid fever. Nature Reviews Disease Primers 2023, 9: 71. PMID: 38097589, DOI: 10.1038/s41572-023-00480-z.Peer-Reviewed Original ResearchConceptsTyphoid feverUndifferentiated febrile illnessInvasive bacterial diseaseEffective vaccination programsFecal-oral routeNovel diagnostic modalitiesFebrile illnessBloodstream infectionsVaccination programBlood culturesClinical trialsImmunological protectionHigh burdenCausative organismDiagnostic modalitiesGlobal burdenDisease pathogenesisFeverHuman infectionsIntestinal epitheliumYoung adultsCulture testingSalmonella enterica subspSerovar TyphiAntimicrobial resistance
2022
Predicting the long-term impact of rotavirus vaccination in 112 countries from 2006 to 2034: A transmission modeling analysis
Kraay A, Steele M, Baker J, Hall E, Deshpande A, Saidzosa B, Mukaratirwa A, Boula A, Mpabalwani E, Kiulia N, Tsolenyanu E, Enweronu-Laryea C, Abebe A, Beyene B, Tefera M, Willilo R, Batmunkh N, Pastore R, Mwenda J, Antoni S, Cohen A, Pitzer V, Lopman B. Predicting the long-term impact of rotavirus vaccination in 112 countries from 2006 to 2034: A transmission modeling analysis. Vaccine 2022, 40: 6631-6639. PMID: 36210251, PMCID: PMC10351612, DOI: 10.1016/j.vaccine.2022.09.072.Peer-Reviewed Original ResearchConceptsRotavirus vaccinationRotavirus positivityVaccine introductionOne-dose scheduleTwo-dose seriesRotavirus burdenRotavirus casesRotavirus gastroenteritisHospital admissionMiddle-income countriesVaccine impactVaccinated individualsLong-term impactMortality burdenPercent reductionVaccinationLife yearsIndirect protectionLow-income countriesLong-term magnitudePositivityDeathBurdenYearsIntroduction Data
2018
Direct and possible indirect effects of vaccination on rotavirus hospitalisations among children in Malawi four years after programmatic introduction
Bennett A, Pollock L, Jere K, Pitzer V, Parashar U, Tate J, Heyderman R, Mwansambo C, French N, Nakagomi O, Iturriza-Gomara M, Everett D, Cunliffe N, Bar-Zeev N, Consortium F. Direct and possible indirect effects of vaccination on rotavirus hospitalisations among children in Malawi four years after programmatic introduction. Vaccine 2018, 36: 7142-7148. PMID: 29887320, PMCID: PMC6238204, DOI: 10.1016/j.vaccine.2018.04.030.Peer-Reviewed Original ResearchConceptsPost-vaccine introductionPrevalence of rotavirusVaccine effectivenessRotavirus prevalenceAcute gastroenteritisVaccine introductionRotavirus hospitalisationsVaccine coverageEfficacy estimatesAdjusted vaccine effectivenessRotavirus vaccine introductionYears of ageUse of vaccinesUnvaccinated infantsRotavirus diarrheaRotavirus diseaseUnvaccinated childrenReferral hospitalRoutine immunisationMalawian childrenSevere diarrheaStool samplesImportant causePoisson regressionHospitalisation
2016
In-season and out-of-season variation of rotavirus genotype distribution and age of infection across 12 European countries before the introduction of routine vaccination, 2007/08 to 2012/13.
Hungerford D, Vivancos R, Read J, Pitzer V, Cunliffe N, French N, Iturriza-Gómara M. In-season and out-of-season variation of rotavirus genotype distribution and age of infection across 12 European countries before the introduction of routine vaccination, 2007/08 to 2012/13. Eurosurveillance 2016, 21 PMID: 26794258, DOI: 10.2807/1560-7917.es.2016.21.2.30106.Peer-Reviewed Original ResearchConceptsGenotype distributionMultinomial multivariate logistic regressionRotavirus gastroenteritis casesRotavirus genotype distributionRoutine rotavirus vaccinationRotavirus vaccination programRotavirus-positive specimensMultivariate logistic regressionOdds of infectionAge of infectionRVGE casesUntypable genotypesRotavirus vaccinationRoutine vaccinationVaccine introductionVaccination programGastroenteritis casesEpidemiological changesGenotype surveillanceLogistic regressionCommon genotypeMicrobiological dataVaccinationSurveillance networkAge
2015
Environmental Drivers of the Spatiotemporal Dynamics of Respiratory Syncytial Virus in the United States
Pitzer VE, Viboud C, Alonso WJ, Wilcox T, Metcalf CJ, Steiner CA, Haynes AK, Grenfell BT. Environmental Drivers of the Spatiotemporal Dynamics of Respiratory Syncytial Virus in the United States. PLOS Pathogens 2015, 11: e1004591. PMID: 25569275, PMCID: PMC4287610, DOI: 10.1371/journal.ppat.1004591.Peer-Reviewed Original Research
2012
Understanding Reduced Rotavirus Vaccine Efficacy in Low Socio-Economic Settings
Lopman BA, Pitzer VE, Sarkar R, Gladstone B, Patel M, Glasser J, Gambhir M, Atchison C, Grenfell BT, Edmunds WJ, Kang G, Parashar UD. Understanding Reduced Rotavirus Vaccine Efficacy in Low Socio-Economic Settings. PLOS ONE 2012, 7: e41720. PMID: 22879893, PMCID: PMC3412858, DOI: 10.1371/journal.pone.0041720.Peer-Reviewed Original ResearchConceptsLow socio-economic settingRotavirus vaccine efficacyVaccine efficacyRotavirus vaccineSevere diseaseNatural infectionImmunogenicity of vaccinationReduced vaccine efficacySevere rotavirus gastroenteritisReduced efficacyClinical trial resultsLow SES populationsRotavirus gastroenteritisVaccine performanceVaccination programImmune responseEpidemiological factorsVaccineVaccinationTrial resultsInfectionSES populationsEfficacyReduced protectionEfficacy declines
2009
Demographic Variability, Vaccination, and the Spatiotemporal Dynamics of Rotavirus Epidemics
Pitzer VE, Viboud C, Simonsen L, Steiner C, Panozzo CA, Alonso WJ, Miller MA, Glass RI, Glasser JW, Parashar UD, Grenfell BT. Demographic Variability, Vaccination, and the Spatiotemporal Dynamics of Rotavirus Epidemics. Science 2009, 325: 290-294. PMID: 19608910, PMCID: PMC3010406, DOI: 10.1126/science.1172330.Peer-Reviewed Original Research