Health Times reporter Li Ning
According to the official website of the National Health Commission, from April 8 to 11, 31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps reported 23,737, 25,037, 26,345, and 23,295 new cases of local asymptomatic infection, respectively.
On April 12, Wu Zunyou, chief expert of epidemiology at the Chinese Center for Disease Control and Prevention, said at a press conference of the joint prevention and control mechanism of the State Council that when diagnosing a person as an asymptomatic infected patient, some of them are likely to be the incubation period of confirmed cases, and after a period of observation, symptoms will appear, and even develop into severe diseases, if they cannot be found in time and treated in time, there will still be risks. That is, this is the so-called "asymptomatic infected person" with quotation marks.
"Asymptomatic infected people can also become a source of infection, spread the virus, and may also turn into a symptomatic confirmed case." Professor Wang Hufeng, director of the Medical Reform Research Center of Chinese Min University, chief expert of the major innovation platform of the interdisciplinary public health and disease prevention and control, and researcher of the National Development Institute, told the Health Times on April 11 that "the performance of asymptomatic infected people is not typical and not prominent, and it is not absolute that asymptomatic infected people have been asymptomatic." Such patients may have symptoms in a few days, and there is a possibility of mutual transformation between yes and no, and it can also be contagious. After passing it on to others, it does not mean that others have not been asymptomatic. "From the perspective of personal protection, because whether there are symptoms or not, asymptomatic infected people are contagious, so they still have to wear masks and vaccinate in time for such people."
Shanghai residents do nucleic acid testing. Pictured from Xinhua News Agency
What can be classified as an asymptomatic infected person? The new coronavirus pneumonia prevention and control plan (eighth edition) published on the official website of the National Health and Health Commission shows that asymptomatic infected people refer to those who test positive for the pathogen of the new coronavirus but have no relevant clinical manifestations. It is mainly found through close contacts and close contacts, entry personnel, high-risk occupational groups and other key populations nucleic acid detection, source of infection tracing, epidemiological investigation, population screening and other ways. If the symptoms or signs follow, they should be revised within 24 hours
Confirmed case.
Wu Zunyou, chief expert of the Chinese Center for Disease Control and Prevention, once said at the press conference of the joint prevention and control mechanism of the State Council that in view of the recent increase in asymptomatic infections, the following measures can be taken: First, through big data, to assist epidemiological investigations to clarify the transmission chain, trace close contacts, and find asymptomatic infected people on the transmission chain. Second, the surveillance line will be moved forward one step further, and through the monitoring mode of "antigen screening + nucleic acid diagnosis", asymptomatic infected people will be found as soon as possible and the chain of transmission will be cut off.
