After this round of large-scale new coronavirus nucleic acid screening in Beijing, the chain of transmission related to the new site has been controlled, and experts believe that there is still a two-week sweep period. At the same time, cases of new coronary pneumonia distributed in society will also enter a normalized state of prevention and control.
From 0:00 to 24:00 on June 26, Beijing newly reported 17 local confirmed cases and 4 asymptomatic infections, with no new suspected cases. Since June 11, Beijing has reported a total of 297 local confirmed cases and 297 hospitalized cases. 25 cases of asymptomatic infections still under observation.
At the 134th press conference on the prevention and control of the new coronavirus pneumonia epidemic in Beijing on June 27, Xu Hejian, deputy director of the Beijing Municipal Party Committee Propaganda Department, director of the Municipal Government Information Office, and municipal government spokesman, said, "The epidemic situation in the capital is severe and complex Nothing can be taken lightly. From the case analysis, circulatory results, and transmission trajectory since the cluster epidemic occurred in the Xinfadi wholesale market, the industry scenarios, approaches, and symptoms involved are complex and diverse, and we cannot be taken lightly or paralyzed. People's carelessness and paralysis may cause new problems."
Diversified propagation paths
For a long time, respiratory transmission and mucosal contact transmission have been regarded as the main routes of transmission of the new coronavirus, but the Beijing New Crown epidemic that began on June 11th, regardless of the scene or route of transmission, is more diverse.
With Xinfadi aquatic products as the core, the scene of Beijing's new crown pneumonia transmission continues to increase, from markets to restaurants, from salmon to beef and mutton, including public toilets.
On June 25th, the Beijing-based Haidian District Center for Disease Control's exodus found that the newly diagnosed case was transferred on June 21, and the infection route of the diagnosed case was locked as a public toilet at No. 70 Yongding Road.
Public toilets have become the spread scene of the new coronavirus, which is the first case after the emergence of the new coronavirus.
As early as February 13, Guangzhou Medical University, Guangzhou Customs and Zhongshan No. 5 Hospital isolated the virus from the feces of patients with new coronary pneumonia. Dr. Tang of Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology has previously called for vigilance against the possibility of the transmission of new coronavirus through human excreta (such as feces and urine). An important method of transmission is also mainly to detect nucleic acids in sputum in the diagnosis experiment, plus some auxiliary tests such as blood routine, liver function, kidney function, etc., but excrement has not attracted attention.
"There is currently no evidence that the new coronavirus is transmitted through the fecal orifice, but the live virus in the feces can enter the air to form an aerosol and then be infected through the respiratory tract, so the elimination of the environment is very important." A virologist said.
According to the paper "Aerosol and surface stability of HCoV-19 (SARS-CoV-2) compared to SARS-CoV-1" published by the National Institute of Allergy and Infectious Diseases under the National Institutes of Health on March 10 , The new coronavirus survives up to 3 hours in air aerosols, with a median half-life of 2.7 hours; it can survive 24 hours on paper materials, up to 4 hours on copper surfaces, and 2-3 days on plastic and stainless steel surfaces .
According to the current understanding of the survival time of the new coronavirus, my country has also made relevant regulations on the elimination of public toilets. "If strictly implemented, it may reduce the chance of infection." An urban sanitation worker said.
In response to the epidemic of new coronavirus pneumonia, on February 12, the Public Toilet Construction Management Committee of the China Urban Environmental Hygiene Association (referred to as the "Central Association Public Toilet Committee") compiled the "Guidelines for Disinfection of Public Toilets during the New Coronary Pneumonia Epidemic" to prevent and control the outbreak During the period, the cleaning and disinfection of public toilets, the safety of public toilet management personnel and feces removal and transportation personnel, and the closed collection and transportation of feces and the harmless treatment were put forward. At the same time, the frequency of killing and killing is regulated, and cleaning personnel are required to disinfect once every 3 hours during the opening of public toilets. The frequency of disinfection can be increased or decreased according to the flow of people.
On March 11, the State Council's Joint Prevention and Joint Control Mechanism held a press conference on strengthening the comprehensive management of medical waste and protecting the ecological environment. At the meeting, Liu Lifeng, deputy director of the Urban Construction Department of the Ministry of Housing and Urban-Rural Development, said that during the epidemic in Beijing, more than 6,000 public toilets in the city remained open 24 hours a day, doubling the frequency of killing.
New Development Site Controlled Chain
From 0:00 to 24:00 on June 26, Beijing newly reported 17 local confirmed cases, 13 of which were "June 12 transferred from a special vehicle to a centralized isolation point for centralized medical observation, and the nucleic acid test result was positive on June 24. ."
The 13 cases of "centralized medical observation" once again reflect the timeliness of Beijing's prevention and control measures.
After the case appeared on June 11, Beijing quickly locked up the new market, isolated the relevant personnel, conducted medical observations, and expanded the population of nucleic acid screening. One was found and one was checked. Through a series of prevention and control measures, the people related to the new development are under control.
"The people with the disease are within our control. We already know where they are and who they are, which is the most critical." Wu Hao, an expert from the Expert Committee on Disease Prevention and Control of the National Health and Health Commission and the chief expert of Beijing Community Health, said If there are confirmed cases, it will continue for a while. "According to the incubation period, I estimate that it will not exceed next week."
Wu Hao judged that the epidemic in Beijing has entered a stable period.
"From the data point of view, it may be a stationary period, and the number of new patients is maintained at a certain number every day. The stationary period does not mean that no new cases occur, but the results of the nucleic acid test results done in the early stage will gradually come out." Wu Hao said It also depends on the nucleic acid test results of those who have not been to the risk area or have contact with the risk group. If there is no problem, basically all sources of infection can be considered to be from the new place.
In the prevention and control of new coronary pneumonia in Beijing, rapid mobilization and detection played an important role.
In addition to the population related to the new development site, nucleic acid screening for key populations in other industries is also underway. At a press conference on the 27th, Wang Hongcun, a second-level inspector of the Beijing Municipal Bureau of Commerce, said that at present, 10,765 hairdressing and beauty business entities have been investigated in Beijing, 26,286 nucleic acid samples have been completed, and 12,350 have been tested, all of which are negative.
Wang Hongcun also said that all hairdressing and beauty companies obey the street and township arrangements in the area where the store is located, take the initiative to do the follow-up nucleic acid detection work of practitioners, and "do all inspections". In the next step, the district governments should continue to implement territorial responsibility, and hairdressing and beauty companies should obey and cooperate with the market supervision and comprehensive law enforcement departments to carry out law enforcement inspections and jointly implement the new guidelines. At the same time, in accordance with the principle of "should be eliminated, should be exhausted", continue to organize a good inspection of the epidemic prevention safety in the hairdressing and beauty industry, to create a safe and secure consumer environment for consumers.
The new coronavirus may coexist with humans for a long time, how to normalize prevention and control next?
"Wuhan didn't know much about the virus at that time, so I pressed the pause button under certain conditions. This time, because I had a lot of good experience and models to use, I took rapid and precise control. The most important thing is Yes, early detection was achieved this time. So far, according to relevant evidence, no community-based spreading spread has been seen, which is crucial." Wu Hao said.
However, Wu Hao also said that the control of the epidemic does not mean that there are no confirmed cases. The prevention and control must continue, and everyone should continue to be slack. "This is why we say normalization prevention and control, not normalization of life."
First Financial Reporter Ma Xiaohua