When I went to the hotel for an internship, I had a health certificate. Did I also get hepatitis B vaccine when I had a health certificate physical examination? How long can it last?

Getting a health certificate is just a physical examination of your body.

You need to have a hepatitis B examination to see if you need to take the hepatitis B vaccine, and the hepatitis B vaccine injection is voluntary and self-funded, and there is no compulsion.

There are individual differences. Some people keep antibodies for a long time, while others keep antibodies for a short time. Generally, the antibody is kept for about three years after vaccination ...