The hepatitis A virus (HAV) is usually spread by putting something in the mouth—even though it might look clean—that has been contaminated with feces from a person with hepatitis A. Unsafe and unsanitary food preparation are common sources of infection. HAV is also transmitted by oral/anal sex. HAV typically causes a moderate but brief period of illness before being cleared by the body. A vaccine against HAV is available and is recommended for many people who haven’t already been exposed to the virus.
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