in January 13th, novel coronavirus pneumonia prevention and control and medical treatment were introduced by the State Council joint defense joint control mechanism. Novel coronavirus pneumonia epidemic has been reported in Hebei and Liaoning recently. The current situation of treatment for critically ill patients is relatively stable in Hebei and Liaoning. At the same time, the overall nucleic acid detection level and efficiency have been greatly improved. At the end of March last year, 2081 medical and health institutions across the country were able to carry out nucleic acid testing; as of January this year, 8437 medical and health institutions were able to carry out nucleic acid testing. < / P > < p > Mi Feng, spokesman of the National Health Commission and deputy director of the Department of publicity, said that since this year, local sporadic cases and clustered epidemic situations have been reported in many places, showing the characteristics of long duration and high proportion in rural areas, and community transmission and multi generation transmission have appeared in some places. China’s novel coronavirus pneumonia is a disease with a super spread phenomenon. Feng Zijian’s deputy director of the China Center for Disease Control and Prevention (
) said that the spread of Dalian’s epidemic is far more than that of other infected persons. The
said that the 1 epidemic of the spread of the epidemic is a phenomenon of super transmission. However, there is no way to identify which patients will play the role of super communicators. We can only analyze after the event and take more prevention and control measures. Feng Zijian introduced that novel coronavirus pneumonia had a higher incidence of asymptomatic infection. Now the international consensus has been reached that asymptomatic patients are infectious and can further spread the virus, but the transmission efficiency is lower than that of the diagnosed patients, and the infectivity is 1 / 4-1 / 3 of the diagnosed patients. < / P > < p > for the problem of ultra long incubation period, Wang GuiQiang, director of the Department of infectious diseases, the first hospital of Peking University, said that the incubation period of the new coronavirus is basically within 14 days. For the individual phenomenon of positive nucleic acid test results after 14 days of isolation, different regions have adopted different means, such as “14 + 7”, that is, to continue to isolate at home after 14 days of isolation, and then carry out nuclear test again after isolation Acid detection.