For several consecutive days, among the new infections of the new coronavirus in the mainland, asymptomatic infections have surged. On April 2, Shanghai added 438 new local cases and 7,788 new asymptomatic infected people.
Why do asymptomatic infected people continue to show up in large numbers? Are asymptomatic infected people contagious? Is it more difficult to prevent and control the increase in asymptomatic infections? The reporter consulted Zhang Boli, an academician of the Chinese Academy of Engineering, on the above issues.
Most asymptomatic people are because of these three points
1. It is related to the characteristics of the Omikeron mutant strain itself
"The new coronavirus variant strain is more contagious, the material is extremely counterproductive, and its toxicity is relatively weak." Zhang Boli explained that the clinical manifestation of the weakening of viral toxicity is that the clinical symptoms will be milder, and many infected people do not show clinical symptoms for a short period of time after infection.
"Although the Semirkron strain is less pathogenic than other variants, asymptomatic people should not take it lightly." Zhang Boli reminded: First, although asymptomatic, it is still contagious and more insidious; the other is asymptomatic today, and tomorrow there may be symptoms.
2. It is related to early screening and early detection
"After the outbreak of the epidemic, large-scale screening was carried out everywhere, and due to early detection, many patients did not have symptoms of infection at the beginning of infection." Chamberlain said.
With the strengthening of early detection capabilities in various parts of the mainland, it is possible for all parts of the mainland to detect infected people as early as possible in a shorter period of time and control the source of infection. Therefore, compared with the previous experience of going to the sentinel medical institution for fever and dry cough, many infected people have been found much earlier in the time of discovery.
3. The mainland has been vaccinated on a large scale
"Another important reason is that mainland residents have been vaccinated on a large scale." Chamberlain explained that the body's immunity in the population is generally enhanced, so it is mostly manifested as asymptomatic.
What is an asymptomatic infected person? What does it have to do with the diagnosis?
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Cover source: Shenzhen Health Commission
Source: Mixed Health, Xinhua News Agency
Edited by: Yeah Reviewer: Xiao Ran