Innovirus infection cannot be effectively isolated, and the route of transmission has not been severed, leading to the spread of the Nanchang Street primary school in Wuxi. According to the requirements of disease control experts in Wuxi and Liangxi District, Wuxi Nanchang Street Primary School decided to suspend classes for seven days from February 22 to February 28, with the approval of the Bureau.
It is understood that there are 2098 students in Nanchang Street Elementary School in Wuxi City. The school discovered Norovirus on the 15th of this month. As of the 21st, there were 55 cases in the school, of which 40 cases were improved.
At present, it is the high season of infectious diseases. Infectious diarrhea caused by Norovirus has obvious seasonality. It can occur throughout the year and has a high incidence in the cold season. Its incubation period is short, usually 1-2 days, and the main symptoms are nausea. Vomiting, stomach pain, abdominal pain, diarrhea, etc., the average duration of symptoms is 2-3 days, often referred to as "winter vomiting disease", is a type of self-limiting disease.
Norovirus has strong infectivity and low infection dose. 18-2800 virus particles may cause infection. The virus strains mutate rapidly, and new strains may appear every 2-3 years. Furthermore, it takes a long time (6-24 months) for an infected host to develop immunity to Norovirus. Even if it has recently been infected with norovirus, the same individual may repeatedly infect a Norovirus or a strain of Norovirus. virus.
At present, Norovirus infection has no specific treatment for symptomatic treatment or supportive therapy. Most people can recover within a week. Dehydration-prone groups such as children and the elderly need special attention.
Norovirus transmission routes include human-to-human transmission or consumption of food and water contaminated with Norovirus. Shellfish seafood such as oysters and raw fruits and vegetables are common foods that cause outbreaks of norovirus infections.
Norovirus prevention and control measures mainly use non-pharmacological means, including hand sanitation, environmental disinfection, food and water safety control, and infection case management, health education.
Consumers should prepare and prepare foods in accordance with WHO's “Five Keys to Food Safetyâ€, ie, keep foods and hands clean, separate raw and cooked foods, process foods thoroughly, thoroughly burn cooked foods, cooked foods, and food ingredients at safe temperatures (5°C). The following, or more than 60 °C), to ensure the safety of water and food raw materials, can well prevent the infection or spread of Norovirus.
After discovering suspected Norovirus infections in crowded units or places such as kindergartens and schools, they shall promptly report to the health administration department and food and drug supervision and administration department of the people's government in the area under their jurisdiction and conduct investigation and disposal of the incidents under the guidance of professionals. The foods, raw materials, tools, and equipment that may cause virus contamination and spread should be sealed up, and infection patients should be treated in isolation. (Source: Health Times Network)
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