Acute illness is normally diagnosed with the IgM anti-hep A, of which you are negative. Thus, it is unlikely that this is an acute infection of the disease.
The IgG anti-hep A antibody remains elevated for decades. Hepatitis A is normally transmitted via the fecal-oral route and can be spread with close personal contact. Frequent handwashing and improved personal hygiene are highly effective in preventing the transmission of the virus.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b