How soon after exposure to hepatitis a will symptoms appear?

2-4 weeks: The incubation period averages 30 days (range 15 to 49 days), .

Range 15 to 50 days: The average incubation period for hepatitis A is about 4 weeks, but can be shorter or longer (range 15 to 50 days). Post exposure treatment with Hep A vaccination or gamma globulin injections can very much reduce the risk of becoming infected. As soon as possible after a known Hep A exposure, seek a physician for treatment options, unless you have had prior vaccinations for Hepatitis A.