Age-specific Incidence of Hepatitis A 1983-93 0 g-l4years 5 们2鸟y 25-39 years 0 +4y years 19831984198519861987198819891990199119921993 Source: CDC, National Notifiable Diseases Surveillance SystemAge-specific Incidence of Hepatitis A 1983-93 Source: CDC, National Notifiable Diseases Surveillance System Year Reported Cases (per 100,000) 19831984198519861987198819891990199119921993 0 5 1 0 1 5 2 0 2 5 5-14 years 15-24 years 25-39 years 0-4 years 40+ years