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Original Title: Kashgar Launches Fourth Round Of Testing For All Staff, Experts Explain Why Large Number Of Asymptomatic Infections Continue To Be Found
[Global Times-Global Network Reporter, Ni Hao]On November 4, Shufu County, Kashgar, Xinjiang launched the fourth round of nucleic acid testing for all employees. Short-term and high-frequency tests demonstrated the determination of the prevention and control of the local epidemic, and also indicated the Kashgar epidemic. The prevention and control pressure caused by a large number of asymptomatic infections was discovered at an early stage. Some experts said that it is even necessary to study and judge the fifth round of full inspection.On November 3, Xinjiang (including the Corps) reported 2 new confirmed cases and 116 new asymptomatic infections. Currently, Xinjiang (including the Corps) has 64 confirmed cases and 345 asymptomatic infections.
Unlike previous local epidemics in other regions, Kashgar, Xinjiang, detected a large number of asymptomatic infections at the beginning of the epidemic. After the first round of nucleic acid testing for all employees on October 27, a total of 178 cases of asymptomatic infection were reported. After the second round of full staff testing on October 29, the cumulative number of asymptomatic infections was 222. After the third full inspection round on November 3, the number of asymptomatic infections in Kashgar increased to 345.
So why did the Kashgar epidemic begin with the discovery of a large number of asymptomatic infections, and in subsequent rounds of testing with all staff, a large number of asymptomatic infections were discovered one after another?
Jiang Qing, former dean and epidemiologist at the Fudan University School of Public Health, explained in an interview with the Global Times on May 4 that the incubation period for asymptomatic infection is 1 to 14 days, and the general manifestation it is 3 to 7 days. Infected individuals vary widely, the timing of infection is not uniform, and the timing of detection of the virus can be early or late. The combination of these factors ultimately led to uneven timing of positive nucleic acid test results. Over time, there has been a phenomenon of constant patient detection. This has also become the reason for intensive local inspections of all employees to eliminate the infection as much as possible.
Why does the number of asymptomatic infections in Kashgar far outperform other cities in the past? Jiang Qingwu analyzed that the epidemic in Kashgar occurred in a garment factory where young and middle-aged people are concentrated. Because the population is relatively good, they don’t even pay attention to symptoms after they appear. At this time, these asymptomatic infections are already contagious. It has quietly spread to his close contacts. “I said that at the time of nucleic acid testing, the transmission from garment factories is not the first generation, nor the second generation, at least the third generation. This is why so many asymptomatic infections have accumulated in a certain period of time. Wang Xijiang, deputy director of the Kashgar Regional Center for Disease Control and Prevention, once said that the high proportion of asymptomatic infections in the Kashgar epidemic is largely due to the timely and efficient work of nucleic acid testing. Infected people are actively screened for nucleic acid tests before they develop symptoms. Check it out.
In addition, Jiang Qingwu analyzed that, unlike Qingdao and Dalian, a large number of asymptomatic infections were found at the beginning of the Kashgar epidemic, and signs of community transmission have been revealed. Intensive testing is necessary for general control. “If so many asymptomatic infections are not quarantined, but flow in society, what kind of consequences can be imagined?” Jiang Qingwu also believes that asymptomatic infections are caught and detected early. Close contacts or even close contacts must decide whether an isolated medical observation should be made according to the situation, to cut off all possible channels of transmission as much as possible.
On November 3, 116 new cases of asymptomatic infection in Kashgar, Xinjiang, were all from quarantine observers. According to data released at the Xinjiang epidemic press conference, the 137 people who tested positive in the first round, including all their close contacts and the close contacts of close contacts, have been under medical observation in isolation.
Jiang Qingwu believes that if a large number of asymptomatic infections are still detected after the fourth round of testing for all employees in Kashgar, the local government and health management departments can judge whether it is necessary to start the fifth round of testing to all the employees. “To get the epidemic under control as quickly as possible, our medical and financial strength allows for intensive testing, which is also worthwhile.”
Wang Xijiang explained at a press conference on Day 3 why the fourth round of testing for all staff is about to begin: “Asymptomatic infections have no obvious clinical symptoms during the incubation period. Nucleic acid testing is the ‘gold standard’ to confirm infections, and also The most important means of identifying asymptomatic infections is to adopt a highly responsible attitude towards people of all ethnic groups and control the epidemic as soon as possible. We will launch the fourth round of nucleic acid testing free for all employees in Shufu County on November 4. “
Jiang Qingwu believes that Kashgar is on the western border, with a sparse population and relatively weak medical infrastructure. “But I think Kashgar responded in a timely manner and measures are in place. The epidemic is still under control and its trend depends on the next performance.” Jiang Qingwu recalled that the northern hemisphere has entered the active period of winter and spring viruses, and we must raise awareness of epidemic prevention among the people. , Be sure to wear a mask in public, pay attention to personal hygiene. The health department must also fully implement the principle of “early detection, early notification, early isolation and early treatment”, advance the prevention and control threshold, and maintain a standardized early warning mechanism.
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