Figure 2-11. Incidence rates of hepatitis B infection per 100,000 U.S. health care workers, 1993-1999.The incidence rate (rate of new infections) of hepatitis B infections generally declined about 60% from 1993 to 1999 among U.S. health care workers. These infections include both symptomatic and asymptomatic cases.
(Source: CDC [2002a].)