Most acute infections (85%) are symptomatic.
6 In rare cases, acute HAV infection can result in death. In 2012, the Centers for Disease Control and
Prevention (CDC) received 1,562 case reports of
HAV—a number estimated to represent as many as 3,050 actual cases, since, as with HBV and HCV, some infected patients are asymptomatic and some
fail to seek care and testing.