Effectiveness Over Time of Varicella Vaccine
Vázquez M, LaRussa PS, Gershon AA, Niccolai LM, Muehlenbein CE, Steinberg SP, Shapiro ED. Effectiveness Over Time of Varicella Vaccine. JAMA 2004, 291: 851-855. PMID: 14970064, DOI: 10.1001/jama.291.7.851.Peer-Reviewed Original ResearchConceptsTime of vaccinationVaricella vaccineVaccine effectivenessCase subjectsPolymerase chain reaction test resultsVaricella-zoster virus DNACase-control studyReaction test resultsReports of outbreaksFirst yearBreakthrough diseaseImmunized groupsActive surveillancePossible confoundersPediatric practiceVaccinationVaccineVirus DNAMonthsMost casesGroup practiceChickenpoxAgeYear 2Year 1Case-control studies of the effectiveness of vaccines: validity and assessment of potential bias
Shapiro ED. Case-control studies of the effectiveness of vaccines: validity and assessment of potential bias. The Pediatric Infectious Disease Journal 2004, 23: 127-131. PMID: 14872178, DOI: 10.1097/01.inf.0000109248.32907.1d.Peer-Reviewed Original ResearchMeSH KeywordsAntibodies, BacterialBacterial CapsulesBiasCase-Control StudiesChild, PreschoolConfidence IntervalsFemaleHaemophilus InfectionsHaemophilus influenzae type bHaemophilus VaccinesHumansImmunityImmunization ScheduleInfantMalePolysaccharides, BacterialProbabilityReference ValuesReproducibility of ResultsSensitivity and SpecificityTreatment OutcomeVaccinationConceptsEffectiveness of vaccinesCase-control studyInvasive Hib infectionsHib vaccinePneumococcal infectionHib infectionsInvasive infectionsHaemophilus influenzae type bInvasive pneumococcal infectionsInfluenzae type bMonths of ageIdentical study designOverall 34Study 74S. pneumoniaeStreptococcus pneumoniaeVaccineInfectionStudy designHibType BPneumoniaeValid methodCasesPotential bias