Hepatitis A is a serious liver disease caused by the hepatitis A virus (HAV). HAV is found in the stool of people with hepatitis A. It is usually spread by close personal contact and sometimes by eating food or drinking water containing HAV. A person who has hepatitis A can easily pass the disease to others within the same household. Good personal hygiene and proper sanitation can also help prevent the spread of hepatitis A.
Vaccines are available for long-term prevention of HAV infection in persons 1 year of age and older. Children who are not vaccinated by 2 years of age can be vaccinated at later visits. For others at risk, the hepatitis A vaccine series may be started whenever a person wishes to be protected or is at risk of infection.
Center for Disease Control Prevention
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