CASES PER 100,000 POPULATION 40 HEPATITIS - Reported case rates by year, United States, 1955-1980 Viral hepatitis continues to be one of the 4 most frequently reported infectious diseases in the United States. The total number of viral hepatitis cases reported for 1980 was higher than the 2 previous years. Increases were observed for both hepatitis B and hepatitis, unspecified, while there was a slight decrease in the number of cases reported for hepatitis A. Persons 15-39 years of age were the group most affected by all types of hepatitis. Area HEPATITIS A Reported cases by state and by month, United States, 1980 Total Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Unk. |