Hepatitis B risk factors

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]

Risk Factors

Individuals are at increased risk of HBV infection if they

• Have sex with someone infected with HBV
• Have sex with more than one partner
• Inject drugs
• Are a man who has sex with men
• Live in the same house with someone who has chronic (long-term) HBV infection
• Have a job that involves contact with human blood
• Are a client in a home for the developmentally disabled
• Have hemophilia
• Travel to areas where hepatitis B is common (country listing)

One out of 20 people in the United States will get infected with HBV some time during their lives.

Their risk is higher if their parents were born in Southeast Asia, Africa, the Amazon basin in South America, the Pacific Islands, or the Middle East.