Astrovirus is a virus that infects mammals and birds.

Astroviruses can cause diarrhea in young animals, including mammals and birds. The mammalian genus is divided into human astrovirus, cat astrovirus, pig astrovirus, sheep astrovirus and mink astrovirus according to the different host. Avian astroviruses include Turkey astrovirus and bird nephritis virus. The virus is a worldwide distribution, fecal-oral transmission, is one of the important causes of acute viral enteritis in infants, the elderly and immunocompromised people, and its pathogenicity has been increasingly paid attention to. The main symptoms of human infection with adenovirus are severe diarrhea, accompanied by fever, nausea and vomiting. The disease is a self-healing disease, most patients in the onset of symptoms 2-3 days, symptoms will gradually reduce, but there are a few symptoms worsen, resulting in dehydration.