When a person's Anti-HAV IgG is positive, it means they have been exposed to the hepatitis A virus. This is identified through a blood test which looks for the presence of immunoglobulins (antibodies) against the hepatitis A virus.
The presence of the Anti-HAV IgG antibodies indicates that the person has had a previous infection with hepatitis A. This could have been a recent or a past infection, and the antibodies will remain in the person's blood even after the infection has been cleared.
This positive result does not necessarily mean that the person currently has an active infection with hepatitis A, as the antibody is only produced after exposure to the virus. If the person has recently been exposed to the virus, they should seek medical advice to confirm if they have an active infection or not.
In most cases, a positive Anti-HAV IgG result can provide immunity against further infections with the hepatitis A virus. However, it is important to remember that it is still possible for a person who has previously been infected with hepatitis A to become infected again, so it is important to practice good hygiene and follow all recommended preventive measures to avoid further infection.