Hepatitis B Antibodies: Protection, Not Disease - What You Need to Know

Hepatitis B antibodies, which are produced by the immune system in response to infection with the hepatitis B virus (HBV), do not cause the disease themselves. Rather, they serve as a protective mechanism against future infection with HBV.

When a person is vaccinated against hepatitis B or recovers from a natural HBV infection, their immune system produces antibodies specifically targeted to recognize and bind to the hepatitis B surface antigen (HBsAg), a protein found on the surface of the HBV. These antibodies, known as anti-HBs antibodies, neutralize HBsAg, preventing the virus from infecting liver cells and causing hepatitis B.

Therefore, the presence of hepatitis B antibodies indicates immunity against the disease and prevents reinfection with HBV. It is not possible for hepatitis B antibodies to cause hepatitis B if passed on to another individual.