Can you still get infected with the hepatitis B virus if you have antibodies?

Nov 03, 2020 Source: Cainiu Health
Disease description:

I previously received the hepatitis B vaccine, so I’m curious—can I still get infected with the hepatitis B virus even if I have antibodies?

Doctor's answer (2)
Dr. Li Yi
Hello, individuals who have received the hepatitis B vaccine typically have relatively high levels of hepatitis B surface antibodies (anti-HBs) in their bodies. However, whether or not infection occurs depends on several factors—particularly the amount of hepatitis B virus (HBV) the individual is exposed to. If the exposure dose is very high, infection may still occur despite prior vaccination. Additionally, if anti-HBs levels are not regularly monitored through quantitative testing, a decline in antibody titers may also increase susceptibility to HBV infection. We hope this information is helpful to you. Wishing you a happy and healthy life!