"Upward vomiting and diarrhea" and "I have a stomachache all the time"
"The whole family turns to be recruited" …
Look out!
Maybe Norovirus is "doing things"
With the coming of spring.
Norovirus enters a high incidence period again.
Crowd gathering places such as schools and kindergartens.
It is a place with high incidence of norovirus infection.
After returning to school after the holiday.
Prevention and control of epidemic situation in schools and other key places is particularly important.
now
There are no specific antiviral drugs for norovirus.
The vaccine is still in the research and development stage.
Therefore, we should maintain good hygiene habits.
Do a good job of personal protection
Strengthen physical exercise and enhance resistance.
Beware of norovirus infection
If you have symptoms of vomiting and diarrhea, seek medical advice immediately!
Beware of norovirus infection
Norovirus is the main cause of human non-bacterial infectious diarrhea.
Norovirus (NV) is a group of virus particles with similar morphology and slightly different antigenicity. It mainly pollutes shellfish, fruits, vegetables and drinking water, and can cause acute gastroenteritis in humans. People of all ages are generally susceptible to norovirus, and children, the elderly and the immunocompromised are high-risk groups.
Infectious diarrhea caused by norovirus has obvious seasonality, which can occur all year round. It is high in cold season, and its incubation period is short, usually 1-2 days. The main symptoms are nausea, vomiting, stomachache, abdominal pain and diarrhea, and the average duration of symptoms is 2-3 days.
Norovirus is highly infectious, but it is a self-limiting disease.
Norovirus has strong infectivity and low infection dose, and 18-2,800 virus particles can cause infection. Moreover, the mutation speed of its virus epidemic strain is fast, and new mutant strains that cause global epidemic can appear every 2-3 years. The immune protection of norovirus can last for 6-24 months. Even if norovirus has been infected recently, the same individual can be repeatedly infected with norovirus of the same strain or different strains.
At present, the treatment of norovirus infection is mainly symptomatic or supportive treatment. Most people can recover within a week, and people who are prone to dehydration, such as children and the elderly, need special attention.
Norovirus spreads widely, so it is necessary to strengthen the awareness of non-drug prevention.
The transmission route of Norovirus includes eating food and water contaminated by Norovirus, and it can also be spread by contact between people through infected cases. Among them, shellfish such as oysters and raw fruits and vegetables are common foods that cause Norovirus infection outbreaks. Water transmission can be caused by bottled water, municipal water supply, well water or other polluted drinking water sources.
The prevention and control measures of norovirus mainly adopt non-pharmaceutical preventive measures, including hand hygiene, environmental disinfection, food and water safety control, infection case management and health education.
How to prevent norovirus infection?
01
Maintaining good hygiene and eating habits is the most effective measure to prevent norovirus infection and control its spread.
Consumers should process and prepare food according to the requirements of WHO’s "Five Points of Food Safety", that is, keep food and hands clean; Separate raw and cooked; Processed food should be thoroughly cooked and burned; Cooked food and ingredients should be kept at a safe temperature (below 5℃ or above 60℃); In particular, it is necessary to ensure that water sources and water quality are not polluted by norovirus and that food raw materials are safe. It can well prevent the infection or spread of norovirus.
02
Suspected cases should be reported in time to strengthen the treatment and management of food-borne infections.
Kindergartens, schools and other crowd gathering units or places should report to the health administrative department of the people’s government under their jurisdiction in a timely manner after discovering suspected norovirus infection, and investigate and handle the incident under the guidance of professionals. Food, raw materials, tools and equipment that may lead to virus pollution and spread should be sealed immediately, and infected patients should be treated in isolation in time.
03
Strengthen the supervision and management of food production and business units, especially the feeding units for high-risk groups.
Food safety supervision departments should formulate corresponding guidance and supervision measures for food production and business units. In particular, the necessary environmental cleaning and disinfection system should be established for canteens and catering units in schools, nurseries and pension institutions to reduce the spread and infection of norovirus.
Norovirus patients or latent infections in the food industry need to be tested negative for norovirus nucleic acid in feces or anal swabs twice in a row before they can take up their posts.
Comprehensive: Hebei market supervision, market talk
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