Benefits
The hepatitis B vaccine mainly works to protect people from getting hepatitis B. That is a kind of liver infection brought on by the hepatitis B virus.
It spreads in several ways. Things like from mother to child during birth, or through shared needles, unprotected sex, tattoos, body piercings, and even contaminated razors or toothbrushes.
Hepatitis B itself can turn out to be pretty serious. Still, it often does not cause any obvious symptoms right away.
Doctors give the vaccine as an injection right into a muscle. They usually recommend it soon after someone faces a potential risk.
Health experts suggest it for all infants and children through age 18. Adults in high-risk groups should get it too.
One key limitation stands out. The vaccine will not help if a person already carries hepatitis B.
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