Orange County Public Health has received three reports in the last month of acute hepatitis A virus (HAV) illness in persons with no recent history of travel or exposure to a known case. All three cases are male, with an age range of 30 to 65 years and illness onset dates ranging from August 14 to September 15. The three have no identified common social contacts. None report a history of injection or noninjection drug use or homelessness; one has a history of having sex with men. None report receiving hepatitis A vaccine in the past.
Last year’s hepatitis A outbreak in San Diego has subsided for several months, but outbreaks of HAV focused on persons with a history of homelessness and/or illicit drug use continue in other parts of the country. More information about San Diego’s outbreak can be found
15-26 cases of HAV infection were reported annually in Orange County from 2013-17 and eight cases have been reported so far this year. Infections in OC residents are generally occur after travel to an HAV-endemic area.