[Common Epidemic] The latest version of the diagnosis and treatment plan： the transmission of asymptomatic infected people is weak, and the transmission of aerosol and digestive tract is uncertain.

　　Cctv news(Reporter wanglili) At 15: 00 on February 5th, a press conference on the joint prevention and control mechanism in the State Council was held. Guo Yanhong, inspector of the Medical Administration and Hospital Authority of the National Health and Wellness Commission, Li Xingwang, member of the national medical expert group and chief expert of the beijing ditan hospital Infectious Disease Diagnosis and Research Center, Hao Fuqing, deputy director of the Social Development Department of the National Development and Reform Commission, Cao Xuejun, deputy director of the Consumer Goods Industry Department of the Ministry of Industry and Information Technology, and Jin Hai, director of the General Administration of Customs, introduced the latest progress in the production, dispatching and import of medical material support.

　　The detection ability is improved and the suspected cases are reduced.

　　February 4th 0— At 2400 hours, provinces (autonomous regions and municipalities) and Xinjiang Production and Construction Corps reported 3,887 newly confirmed cases, 431 newly severe cases, 65 newly dead cases, 262 newly cured cases and 3,971 newly suspected cases. By 24: 00 on February 4th, the National Health and Wellness Commission had received a total of 24,324 confirmed cases from provinces (autonomous regions and municipalities) and Xinjiang Production and Construction Corps, including 3,219 severe cases, 490 cumulative deaths, 892 cumulative cured cases and 23,260 suspected cases. A total of 39 confirmed cases were received from Hong Kong, Macao and Taiwan, including 18 cases in Hong Kong Special Administrative Region, 10 cases in Macao Special Administrative Region and 11 cases in Taiwan Province.

　　Song Shuli, spokesperson of the National Health and Wellness Commission and director of the Propaganda Department, said that the number of new suspected cases in the latest epidemic data has obviously decreased, because the detection ability has improved, making more suspected cases confirmed or excluded. This trend is the same in both China and Hubei.

　　New mild cases still need isolation treatment.

　　On February 5th, National Health Commission issued the "Diagnosis and Treatment Plan for Pneumonia Infected by novel coronavirus (Trial Fifth Edition)". Compared with the fourth edition, the fifth edition revised three aspects: First, the epidemiological characteristics were clearer and the clinical manifestations were described in more detail. Second, the clinical classification of cases is more refined. Compared with the fourth edition, the new edition has increased the number of "light", and the clinical classification has changed into four categories: light, ordinary, heavy and critical, in order to strengthen the clinical classification guidance, better lock cases and improve the level of treatment. Third, the methods and means of treatment are more abundant, not only symptomatic and supportive treatment, but also oxygen therapy are classified in detail, which provides a basis for the guidance and operability in the clinical treatment process.

　　Li Xingwang said that with the improvement of detection ability, they found that some patients showed mild symptoms, such as fever, moderate and low fever, slight fatigue and occasional dry cough, and there was no pneumonia in the course of disease. "Although these patients are mild, they are still contagious. In the diagnosis and classification, adding this lightness is to isolate this part of patients and better control the source of infection. "

　　Asymptomatic infection can also be the source of infection.

　　The new version of the guide clearly points out that asymptomatic infected people may also become the source of infection. With the end of the holiday, the peak of return trip is coming. Are there any more management measures for asymptomatic infected people who are difficult to identify by body temperature screening? Li Xingwang said that such a situation does exist at present, because in terms of pathogenesis, since such patients have the virus, it may cause transmission. However, from the current situation, asymptomatic infected people are relatively mild and carry less virus, so their transmission ability will be weaker than that of patients with specific diseases.

　　Li Xingwang pointed out that asymptomatic infected people are mostly caused by close contact with patients. If there is no contact with infected people, there is no need to panic if you cough occasionally.

　　Aerosol and gastrointestinal transmission have yet to be confirmed.

　　In the fourth edition of the diagnosis and treatment plan, the description of the transmission route is that "droplet transmission through respiratory tract is the main transmission route, and it can also be transmitted through contact", and the fifth edition is revised as "droplet transmission through respiratory tract and contact transmission are the main transmission routes, and the transmission routes such as aerosol and digestive tract have yet to be clarified". In this regard, Guo Yanhong said that based on the deepening understanding of clinical diseases, the transmission route was fine-tuned in the fifth edition. Although most cases are mainly transmitted by respiratory tract and droplets, nucleic acid tests are positive in feces at present, so the possibility of transmission through the digestive tract cannot be ruled out. "Based on the clinical and development characteristics of this disease, these experiences should be incorporated into the program in time to guide clinical practice."

　　Li Xingwang added that aerosol transmission can be seen in respiratory infectious diseases, but it is not clear whether there is aerosol transmission in novel coronavirus. The society is very concerned about the route of transmission, including finding the virus in feces. There is no more evidence about whether this intestinal route of transmission exists. In the diagnosis and treatment plan, it is stated that "the transmission routes such as aerosol and digestive tract are still to be clarified", that is to say, this phenomenon has been concerned, but more research work is needed, and the writing of transmission routes may be changed when there is evidence in the future.

　　Revise the standard of suspected cases for epidemic control.

　　In the fifth edition of the diagnosis and treatment plan, the criteria for judging suspected cases were changed from "fever" to "fever or respiratory symptoms". In this regard, Li Xingwang said that because mild patients have low fever or respiratory manifestations, the criteria for judging suspected cases were revised in the fifth edition of the diagnosis and treatment plan. Patients with mild clinical manifestations but epidemiological history are not spared, in order to find, diagnose and isolate early. This may increase the number of suspected cases, but early collection and search of these cases is very beneficial to control the epidemic situation and control the source of infection.

　　Announce the latest national unified discharge standard

　　At present, the discharge standards in Hubei province, including Wuhan, are higher than other discharge standards in the country. But after the release of the fifth edition of the diagnosis and treatment plan, does it mean that the discharge standards in Hubei province or Wuhan are unified into the national standards, and the situation will not be observed for 10-12 days? In this regard, Guo Yanhong said that the discharge standard is applicable to the whole country from the first edition to the fifth edition, and it is the same for medical institutions and patients in all provinces and regions of the country. Among the discharge standards in the fifth edition, respiratory symptoms improved obviously after three days of normal body temperature, inflammation was obviously absorbed by chest imaging, and respiratory pathogenic nucleic acid was negative twice in a row. These standards are applicable to the whole country, and there is no problem of implementing other standards in Hubei.

　　The daily output of masks exceeds 14.8 million.

　　At the press conference, a reporter asked when Remdesivir would be put into use, and Song Shuli responded that drugs have its established path from basic research to clinical application, and all the processes must be completely in line with the national drug approval process before they can be applied to patients.

　　In addition, Hao Fuqing, deputy director of the Social Development Department of the Development and Reform Commission, once again responded to the shortage of masks. As of February 3, the daily output of masks in 22 key provinces in China has reached 14.806 million, up 3.1% from the previous day, and the capacity utilization rate has reached 67%, up 2 percentage points from the previous month. Among them, the daily output of the most scarce N95 masks has reached 116,000, an increase of 48% from the previous month. The daily output of other medical masks was 9.98 million, an increase of 36% from the previous month. "Once again, the surplus output after the epidemic will be collected and stored by the state as long as it meets the standards."