Figure 1From: The use, safety, and effectiveness of herpes zoster vaccination in individuals with inflammatory and autoimmune diseases: a longitudinal observational studyIncidence proportion for each 6-month period of zoster vaccination by calendar year from June 1, 2006, to December 31, 2009. The proportion is expressed as the proportion of unvaccinated individuals under observation and vaccinated in each 6-month period. It does not include individuals vaccinated in previous time periods.Back to article page