1, you are a small three-yang carrier, generally do not need treatment, you can observe regularly. Like running. Sit-ups and push-ups and do some fitness exercises. You can do anything.

2. The benefits of antiviral therapy (lamivudine, interferon, etc. ) is limited to the small three-yang carrier and the effect is very poor. It is difficult for patients to persist because they can't see the effect, so it is best not to use drugs.

3, many ways can be infected, and it is meaningless to investigate the source of infection.

Vaccination will no longer play a role in preventing infection. However, hepatitis B vaccine can be used as an immunomodulator as an auxiliary drug under the guidance of a doctor. It can be used on the premise of therapeutic indications.

You and your girlfriend are both infected with hepatitis B, so there is no need to isolate them deliberately. Repeated infection is meaningless.

6. People infected with hepatitis B are not contagious in daily life. There will be a certain amount of hepatitis B virus in body fluids, including saliva, but most of them are inactive and infectious.