How to Prevent Norovirus Teaching Plan

The lesson plan for preventing norovirus is as follows:

I. Overview

Norovirus infectious diarrhea is a kind of diarrhea caused by Norovirus, which has the characteristics of acute onset, rapid spread and wide coverage, and is the main reason for the outbreak of non-bacterial diarrhea. Norovirus is highly contagious, mainly spread through the intestine, and can be spread through polluted water, food, articles, air, etc. , common in communities, schools, restaurants, hospitals and nurseries.

Nursing homes and the army caused a collective outbreak. Norovirus has a high degree of genetic variability, and there may be strains with different genetic characteristics that are prevalent in the same period and community.

Norovirus antibody has no significant protective effect, especially long-term immune protection, which is easy to cause repeated infection. Norovirus-infected diarrhea is prevalent all over the world, which can occur all year round, mainly affecting adults and school-age children, and it is high in cold season.

Second, the clinical symptoms

Norovirus infection mainly causes gastroenteritis, which has the characteristics of acute onset, rapid spread and wide coverage. The symptoms of gastroenteritis are nausea, vomiting and diarrhea. Some people complain of headache, fever, chills and muscle pain. Symptoms passed 1-2 days. I usually feel very serious and throw up many times a day. Symptoms usually appear 24-48 hours after ingestion of the virus.

However, symptoms may appear 12 hours after exposure. There is no evidence that infected people can become long-term virus carriers, but the virus can be detected in feces and vomit of infected people from onset to 2 weeks after recovery.

Third, the route of transmission.

Norovirus is mainly transmitted through the digestive tract and is highly contagious. Norovirus can be found in the feces and vomit of infected people, and it can be infected by Norovirus in several ways:

1, eating food contaminated by norovirus or drinking drinks contaminated by norovirus;

2, contact with norovirus contaminated objects or surfaces, and then touch the mouth with your hands;

3, direct contact with infected people (such as taking care of patients, eating with patients or using the same tableware.

Food and drinks are easily contaminated by norovirus, because the virus is so small that people can get sick if they ingest less than 100 viruses. Food can be directly contaminated by contaminated hands, vomit or feces, or contaminated by nearby vomit droplets. Although it is difficult for this virus to reproduce outside the human body, once it exists in food or water, it will cause diseases.

Some foods may have been contaminated before being sent to restaurants or shops. Some diseases are caused by eating oysters caught from polluted water. Other products such as salads and frozen fruits may also be contaminated at the source.

Fourth, the treatment method

There is no special treatment for infection caused by norovirus, and symptomatic treatment is the main treatment. The course of disease is usually 2-3 days, and there is no sequelae after recovery. However, people who can't drink enough water to replenish the water lost due to vomiting and diarrhea may be dehydrated. People who need special medical observation include children, the elderly and people of all ages who can't take care of themselves.

Verb (abbreviation of verb) preventive measures

The key to prevent norovirus-infected diarrhea is to control the disease from the mouth, pay attention to the hygiene of diet and drinking water, and develop good living habits.

1, environmental health protection. No littering, no defecation, timely disinfection of patients' vomit and feces to ensure the cleanliness of the surrounding environment; Contaminated clothes should be thoroughly washed with soapy water;

2, pay attention to food hygiene, so as not to "get sick from the mouth."