Figure 2From: The incidence of varicella and herpes zoster in Massachusetts as measured by the Behavioral Risk Factor Surveillance System (BRFSS) during a period of increasing varicella vaccine coverage, 1998–2003Annual incidence of herpes zoster by age, 1999–2003. Annual incidence of herpes zoster by age: comparison of Harvard Community Health Plan (HCHP), 1990–1992 [6], and the Massachusetts Behavioral Risk Factor Surveillance System (BRFSS), 1999, 2000, 2002, and 2003.Back to article page