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 who are at increased risk of hepatitis B infection include:

• Infants born to infected mothers
• Young children in day-care or residential settings with other children in endemic areas
• Sexual/household contacts of infected persons
• 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.