Possibility of getting hepatitis b after vaccination?

The hepatitis B vaccine is very effective in preventing hepatitis B infection. However, there is a small chance that someone who has been vaccinated can still get hepatitis B. This is called a breakthrough infection.

Breakthrough infections can occur for a number of reasons, including:

* The person may not have developed immunity to the vaccine. This can happen if the person did not receive all of the recommended doses of the vaccine, or if their immune system is weakened.

* The person may have been exposed to a large amount of the hepatitis B virus. This can happen if they come into contact with someone who is infected with the virus, or if they share needles or other drug paraphernalia.

* The person may have a genetic mutation that makes them more susceptible to hepatitis B infection.

Breakthrough infections of hepatitis B are rare, but they can be serious. If you think you may have a breakthrough infection, it is important to see a doctor right away.