Fecal mouth is the main route of transmission of hepatitis A. Unclean water and food, including aquatic shellfish such as Meretrix meretrix, are easy to cause the spread of hepatitis A. Patients with hepatitis A and asymptomatic infected people are the sources of infection. Patients with hepatitis A only excrete pathogens from feces, and HAV in blood mainly appears before jaundice 14-2 1 day, during which patients' blood is infectious.

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Develop good hygiene habits and control "diseases from mouth to mouth". Food should be heated at high temperature. Under normal circumstances, heating at 100℃ for one minute can inactivate hepatitis A virus.

For some foods that are easy to carry pathogenic bacteria, such as snails, shells, crabs, especially seafood and aquatic products that can enrich hepatitis A virus such as mussels, they must be cooked and steamed thoroughly when eating, so as to eliminate bad eating habits such as eating raw, eating half-baked, and eating directly after pickling.

Baidu encyclopedia-hepatitis A