Original title: Nanjing conducts five consecutive rounds of large-scale nucleic acid screening, in order to detect infected people as soon as possible and implement more precise prevention and control
Yangtze Evening News, August 7 (Reporter Liu Liyuan and Xue Ling) On August 7, the Information Office of the Nanjing Municipal People’s Government held the 18th Nanjing New Crown Pneumonia Epidemic Prevention and Control Press Conference to report the latest situation of the city’s epidemic prevention and control. Bao Changjun, director and chief physician of the Jiangsu Provincial Center for Disease Control and Prevention of Acute Infectious Diseases, introduced the first five rounds of nucleic acid testing.
Why carry out multiple rounds of large-scale nucleic acid screening? Bao Changjun introduced that in the early stage of the epidemic, when the spread of the infection is unknown, a large-scale population of nucleic acid screening can quickly find potential infections, quickly identify risk areas and populations, and take timely targeted control measures to stop them. The spread of the virus can minimize the chance of exposure to the virus for the general population. The reason for conducting multiple rounds of testing is mainly based on two considerations: one is the law of virus infection. After the virus infects the human body, it takes a certain time for the human body to multiply, which is what we usually call the incubation period. If the concentration is low, it may not be detected if it does not reach the minimum detection limit; the second is the phenomenon of intermittent detoxification. At the time of sampling, if there is not a sufficient concentration of virus in the collected sample, it may also cause missed detection. When the two factors of virus incubation period and intermittent detoxification are superimposed on a large number of screening populations, a few rounds of nucleic acid screening often cannot find all infected objects. In order to detect the infected population as soon as possible and implement more precise prevention and control, It is necessary to carry out multiple rounds of large-scale nucleic acid screening in a timely manner.
Combined with the current screening, how to judge the prevention and control situation? The current epidemic prevention and control is still at a critical point, and citizens still need to maintain good protective measures, especially in poorly ventilated places, to wash their hands in time. Keep the living and working places ventilated, keep a distance of 1 meter, and vaccinate as soon as possible.
In addition to paying attention to public areas, Nanjing also needs to strengthen the risks of imported cases from abroad and in some areas.
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