Influenza outbreaks in nursing homes: how effective is influenza vaccine in the institutionalized elderly?
Cartter M, Renzullo P, Helgerson S, Martin S, Jekel J. Influenza outbreaks in nursing homes: how effective is influenza vaccine in the institutionalized elderly? Infection Control And Hospital Epidemiology 1990, 11: 473-8. PMID: 2230050, DOI: 10.1086/646214.Peer-Reviewed Original ResearchConceptsNursing homesUnvaccinated residentsClinical illnessVaccine effectivenessThird outbreakInfluenza outbreaksInfluenza vaccination ratesInfluenza vaccine effectivenessGeometric mean titersHemagglutination inhibition antibodiesVaccinated residentsConnecticut nursing homesInfluenza seasonInfluenza vaccineMean titersVaccination ratesHI antibodyInfluenza ARelative riskHI titersRetrospective investigationIllnessTitersAntibodiesOutbreak