How many new HBV infections occur annually in the United States?
In 2007, 4,519 cases of acute hepatitis B in the United States were reported to CDC; the overall incidence of reported acute hepatitis B was 1.5 per 100,000 population, the lowest ever recorded. However, because many HBV infections are either asymptomatic or never reported, the actual number of new infections is estimated to be approximately tenfold higher. In 2007, an estimated 43,000 persons in the United States were newly infected with HBV. Rates are highest among adults, particularly males aged 2544 years.
In 2007, 4,519 cases of acute hepatitis B in the United States were reported to CDC; the overall incidence of reported acute hepatitis B was 1.5 per 100,000 population, the lowest ever recorded. However, because many HBV infections are either asymptomatic or never reported, the actual number of new infections is estimated to be approximately tenfold higher. In 2007, an estimated 43,000 persons in the United States were newly infected with HBV. Rates are highest among adults, particularly males aged 25–44 years.
