Hepatitis A blood tests check for immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies. An IgG-positive and IgM-negative result may suggest immunity to hepatitis A. A doctor may request a ...

A person cannot contract hepatitis A more than once. Once someone has contracted hepatitis A, their body makes antibodies that provide lifelong protection against the virus. Hepatitis A is a liver ...

NEW YORK (Reuters Health) - Hepatitis A infections, usually transmitted via contaminated food, can cause debilitating illness, but protection afforded by the hepatitis A vaccine last more than a ...

Hepatitis A and B are the most common vaccine-preventable diseases for travelers; nevertheless, up to 50% of confirmed cases of hepatitis A and B in Europe are still acquired during travel. [1] This ...