Abstract
During the 2003-2004 influenza season, we conducted a case-control study of influenza vaccine effectiveness (VE) among Colorado residents aged 50-64 years. Cases (n=330) were identified from laboratory-confirmed influenza reports to the Colorado Department of Public Health and Environment (CDPHE). Controls (n=1055) were recruited by random-digit dial telephone survey. VE was 60% (43-72%) and 48% (21-66%) among those without and with high-risk medical conditions, respectively. VE was 90% (68-97%) and 36% (0-63%) against influenza-related hospitalization for persons without and with high-risk conditions, respectively.
Publication types
-
Research Support, U.S. Gov't, P.H.S.
MeSH terms
-
Antigenic Variation*
-
Case-Control Studies
-
Colorado
-
Female
-
Hospitalization / statistics & numerical data
-
Humans
-
Influenza A Virus, H3N2 Subtype / classification*
-
Influenza A Virus, H3N2 Subtype / genetics
-
Influenza A Virus, H3N2 Subtype / immunology*
-
Influenza Vaccines / administration & dosage
-
Influenza Vaccines / immunology
-
Influenza Vaccines / therapeutic use*
-
Influenza, Human / epidemiology*
-
Influenza, Human / immunology
-
Influenza, Human / prevention & control*
-
Influenza, Human / virology
-
Male
-
Middle Aged
-
Seasons
-
Species Specificity
-
Treatment Outcome
-
Vaccination / statistics & numerical data