Experts talk about large-scale nucleic acids. Is it necessary to insist on large-scale normalization of nucleic acids at this stage?

Not long ago, the trend of epidemic prevention and control in all parts of the country tended to be stable as a whole, and the current nucleic acid testing policy was adjusted nationwide. According to the Health Times, from June 2 1 day, the number of nucleic acid tests in various places increased from three days to five days, while some stopped the normal nucleic acid tests.

According to the Changjiang Daily, since June 22nd, Wuhan citizens have to give information that nucleic acid tests are negative or nucleotides have been sampled within five days when they enter communities, universities, enterprises and other public places.

The person in charge of the epidemic prevention and control headquarters in COVID-19 introduced in detail that "according to the epidemic prevention and control situation in Hubei Province at this stage, it is now adjusted from' three-day inspection' to' five-day inspection'".

On June 2 1 day, the Hefei Municipal People's Government announced that on June 22, Hefei suspended the completely free nucleic acid testing once every seven days in the normalized areas. And will continue to do a good job of testing services for fertilizer workers and key personnel.

On June 22nd, the Office of emergency headquarters, a comprehensive epidemic prevention and control office in COVID-19, Lu 'an, issued a notice to cancel the usual "five-day round" of nucleic acid testing, and to cancel the pop-up prompts and yellow codes.

According to the notice issued by official website, Huainan Municipal People's Government and Huainan COVID-19 Epidemic Prevention and Control Emergency Comprehensive Command on June 2 1 day, the normalized nucleic acid detection was scheduled to be suspended every five days 1 round because Huainan's industrial ecosystem is a low-risk area.

On June 10, routine safety inspection was conducted for regional nucleic acid detection in Hai 'an City, Jiangsu Province, and 345,940 people were sampled, all of which were negative. From June 13, the city will stop the normal safety inspection of regional nucleic acid detection, and this will prevail if regional nucleic acid detection is needed in the future.

On June 10, 345,940 people were sampled from the normal safety inspection of nucleic acid detection in Hai 'an, and all the results were weakly positive. After that, the normalization safety inspection of nucleotides was suspended. Hai' an county issued a map

According to the report of Suzhou Epidemic Prevention and ControlNo. 140, unless you enter a crowded closed place and take public transportation, you will not be tested negative for nucleic acid within 72 hours.

Announcement of Huizhou Airport in June 10. From now on, it is considered that tourists entering Huizhou Airport will enter the terminal without negative proof of nucleic acid test within 48 hours.

On June 9th, He Qinghua, the first-class inspector of the CDC of the National Health Planning Commission, made it clear at the meeting of the joint prevention and control mechanism in the State Council that it is unnecessary for low-risk areas and low-risk people to carry out nucleic acid testing frequently.

"In the absence of risk, there is no need to stipulate the normalization of nucleic acid testing in the whole family." Dong Li, chief physician of infectious diseases department of Beijing You 'an Hospital, told Health Times on June 24th that all parts of the country can make adjustments according to their own epidemic situation. Because the epidemic situation varies from place to place, it is necessary to determine whether normalized detection is needed according to the risk of epidemic prevention and control, so as to increase the duration of nucleic acid detection and even cancel normalized nucleic acid detection. It can detect high-risk groups, such as medical staff in isolation wards and staff in public places.

Huang Senzhong, a professor in the Department of Statistical Analysis and Computer Science at Nankai University in Tianjin, once told me what he saw and heard at eight o'clock: "In the' normalization' stage, in a big city with low risk, there is no need for normalization screening, just check the key population. Large-scale nucleotide, for most areas, its most effective role is to quickly screen out virus-infected people after discovering the COVID-19 epidemic. In the screening process, compared with the previous hospital outpatient service, hospital outpatient service and key population inspection, it is not very useful. "

Dong Li once said that the actual nucleic acid detection needs all parts of the country to find their own methods to avoid one size fits all and waste of resources.