Hepatitis A is a highly contagious, short-term liver infection caused by the hepatitis A virus.

How serious is hepatitis A?

People who get hepatitis A may feel sick for a few weeks to several months but usually recover completely and do not have lasting liver damage. In rare cases, hepatitis A can cause liver failure and even death; this is more common in older people and in people with other serious health issues, such as chronic liver disease.

How is hepatitis A spread?

The hepatitis A virus is found in the stool and blood of people who are infected. The hepatitis A virus is spread when someone ingests the virus (even in amounts too small to see) through:

►Person-to-person contact

Hepatitis A can be spread from close, personal contact with an infected person, such as through certain types of sexual contact (like oral-anal sex), caring for someone who is ill, or using drugs with others. Hepatitis A is very contagious, and people can even spread the virus before they feel sick.

►Eating contaminated food or drink

Contamination of food with the hepatitis A virus can happen at any point: growing, harvesting, processing, handling, and even after cooking. Contamination of food and water happens more often in countries where hepatitis A is common. Although uncommon, foodborne outbreaks have occurred in the United States from people eating contaminated fresh and frozen imported food products.

Who is at risk for hepatitis A?

People at increased risk for hepatitis A

• International travelers
• Men who have sex with men
• People who use or inject drugs (all those who use illegal drugs)
• People with occupational risk for exposure
• People who anticipate close personal contact with an international adoptee
• People experiencing homelessness

People at increased risk for severe disease from hepatitis A infection

• People with chronic liver disease, including hepatitis B and hepatitis C
• People with HIV