Hepatitis A is a liver disease caused by the hepatitis A virus. According to the Centers for Disease Control and Prevention (CDC), it is estimated that between 125,000 and 200,000 people are infected with hepatitis A each year in the United States. Between 84,000 to 134,000 of of those people will show symptoms of hepatitis A virus (HAV). Each year, approximately 100 people will die because of hepatitis A.
Hepatitis A is transmitted primarily through oral contact with feces (oral-fecal contact). This includes contaminated food or water sources and sexual contact, especially oral-anal sex.
Hepatitis A can easily spread among young children in day care settings because many are in diapers and cannot wash their own hands, and no one may know they have the disease since children normally do not have symptoms.
Hepatitis A has on rare occasions been transmitted through blood transfusion, use of blood products or sharing needles or other injecting equipment contaminated with HAV-infected blood. Transmission by blood is rare because the presence of virus in the blood occurs with the onset of infection and is not thought to be present long.
Most adults infected with hepatitis A usually develop some symptoms. Symptoms may develop about 15-50 days after exposure; the average is 28 days. These may include:
Children under 6 years of age seldom develop symptoms, although some may experience diarrhea.
There are currently three blood tests available to detect HAV antibodies (disease-fighting proteins in the blood). Antibodies may be detected for up to six months after symptoms begin. HAV antibodies usually disappear after this time. Talk to your healthcare provider for more information about HAV testing.
There is no cure for hepatitis A. Most people with severe infection will experience short-term illness and then recover completely. They are often told to rest for one to four weeks and to avoid intimate contact with others. Some doctors recommend a high-protein, low-fat diet during recovery and suggest patients avoid alcohol, sedatives, or strong painkillers. Once recovered, an individual is immune and will not get hepatitis A again.
Fortunately, complications from hepatitis A are rare, and few deaths result from it. It is not known to cause chronic infections. However, it can make some people very sick, and it is easily preventable.
Yes! Hepatitis A is preventable by vaccination. Clinical trials have shown that the vaccine is effective in preventing infection in about 95% of people who were exposed. There are generally no side effects, except for soreness at the site of injection. Less than 10% of those vaccinated become tired and nauseous.
The Centers for Disease Control and Prevention (CDC) recommends hepatitis A vaccination for:
Others recommended for hepatitis A vaccine:
Besides vaccination, there are other ways to protect yourself against sexual transmission of hepatitis A:
Other ways to prevent hepatitis A:
If you have tested positive for hepatitis A, you may want to tell to your sex partner(s) that you have the virus. As part of good partner communication, deciding to use latex condoms and moisture barriers during sexual contact helps reduce the risk of transmitting a sexually transmitted disease. Hepatitis A can be transmitted through oral-anal sex so it is recommended to always use safer sex methods to reduce the risk of transmission.
Men who have sex with men (MSM), compared the population as a whole, are at increased risk of getting hepatitis A and B. However, there are safe and effective vaccines available for both hepatitis A and B. Learn more about hepatitis risks and prevention, take a risk assessment and take a quiz to check your knowledge at ASHA's hepatitis website for men.