Although spring has come, noroviruses that “like cold but not heat” are still active when the “cold spring” is going on. “Did the child vomit and have diarrhea, did he eat bad food? Why did the classmates in the class have these symptoms one after another?” Norovirus.”

What is Norovirus?

Dai Yingxue: It is the main pathogen of acute gastroenteritis worldwide, with high infectivity and rapid spread. It is easy to cause clusters and even outbreaks in collective institutions, such as kindergartens, large, medium and primary schools, factories, construction sites, hotels, etc.

What are the clinical manifestations of norovirus?

Dai Yingxue: The incubation period is very short, usually 12-48 hours. After infection, the most common symptoms are diarrhea and vomiting, followed by nausea, abdominal pain, headache, fever, etc. Diarrhea is more common among infected adults and vomiting is more common among infected children.

How does the disease spread?

Dai Yingxue: It is mainly transmitted through the fecal-oral route, including ingestion of aerosols produced by feces or vomit, ingestion of food or water contaminated by feces or vomit, or indirect contact with the environment contaminated by feces. Therefore, improper disposal of feces or vomitus may lead to infection.

How is norovirus infection treated?

Dai Yingxue: Norovirus infection is a self-limiting disease. There is no specific treatment. Most patients can recover after 2 to 3 days of symptoms. However, infants and the elderly may experience more serious symptoms such as dehydration after infection with norovirus.

The duration of immune protection against norovirus is short, the same person may be repeatedly infected with the same or different strains of norovirus, and everyone is generally susceptible to norovirus.

How to prevent?

Dai Yingxue: Wash your hands one after the other, namely “before preparing food, before eating, before taking care of infants and young children, etc.”; “after going to the toilet, after returning home, after contact with pollutants, etc.”, wash with soap and running water for at least 20 hours. Second.

Thoroughly wash fruits and vegetables, distinguish between raw and cooked utensils when cooking, and cook shellfish and other seafood thoroughly.

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