Norwalk Virus Gastroenteritis
After the Norwalk virus infection, vomiting and diarrhea are the main symptoms. Norwalk virus is a group of pathogens belonging to parvovirus. Norwalk virus is the prototype of this group of viruses. It is 25-32nm in diameter, round, without envelope, and seems to belong to DNA virus. Only humans and orangutans are susceptible. This group of viruses is highly resistant, resistant to ether, acid and heat, and cannot be completely inactivated at 60 ° C for 30 minutes.
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