Zoster vaccine effectiveness against incident herpes zoster by characteristics and disease definition.

aDefinition requiring antiviral administration within 7 d before or after the diagnostic code for herpes zoster.bAdjusted for age, gender, race, low income, COPD, IBD, kidney disease, diabetes mellitus, rheumatoid arthritis, and SLE. Overall estimates were also adjusted for immunosuppression status. Stratified analysis by immune status adjusted for age, gender, race, and low income.cImmunosuppression defined as individuals with leukaemia, lymphoma, and HIV or during and for 6 mo after a prescription for an immunosuppressive drug including oral corticosteroids.