Is the virus incubation period longer? What do you think of super-spreaders?

afternoon of January 5, Beijing, Dalian and Shenyang held press conferences on epidemic prevention and control. There was one new confirmed case in each of the three places on the 4th. In this outbreak, Shenyang, Dalian, Beijing have a number of cases tested before being confirmed. And the emergence of a super-spreader in Dalian is also of concern . . .
News 1 and 1 wired China CDC Deputy Director Feng Zijian, together to understand the current outbreak of what's new? What are the challenges for our prevention and control?, deputy director of the China Center for Disease Control and Prevention: First of all, because of the control of the population, close contacts to carry out a number of repeated tests, it appears that after many tests to be positive. Of course, there are also a small number of patients and infected people with an incubation period of more than 14 days, but this proportion is very small. Recently, there have indeed been a few cases in which immigration officers have tested positive after 14 days of isolation, which has led to further transmission. The reasons for this situation may also be varied and further analysis is on the way. It could be an ultra-long incubation period of more than 14 days, or it could be that the test method used, the test reagent sensitivity is not enough, or it could be that he was infected in an isolation environment during isolation, so that he would not test positive until he was released from quarantine, causing further transmission. We will now do further analysis and evaluation of each of the reasons for each link, for which the next steps to be taken to improve the detection rate, detection rate, to prevent further transmission of the virus after isolation, these measures are being studied.China CDC Deputy Director Feng Zijian: Some places according to the specific situation to make some reactions, in the original isolation of 14 days on the basis of the extension of 7 days or short or long home or concentrated observation time, but also to minimize the occurrence of de-isolation, in the community, in the family to cause further transmission. However, we should be aware that the so-called long incubation period, after 14 days of isolation, leads to the spread of the phenomenon in the entire immigration of the proportion of de-segregated persons is very low. The next step is to adjust the quarantine measures for inbound persons on arrival, how the quarantine time is more appropriate, and further assessment is being made., deputy director of the China Center for Disease Control and Prevention: As the newly discovered mutant virus in the UK spreads and spreads in the UK and elsewhere, there are more and more opportunities for it to enter our country. In the future, in the immigration personnel, including possible contaminated goods, the probability of detection of the virus will be greatly increased, and even after the possibility of entry into our country, the possibility of local transmission is also present. Monitoring and control should be strengthened in this regard.feng Zijian, deputy director of the China Center for Disease Control and Prevention: Xinguan from the beginning of last year to now, a year's time, in fact, the international community has a very clear understanding of it, the disease is particularly prone to the formation of super-transmission phenomenon. A significant proportion of those infected do not transmit and do not cause second-generation cases. However, there are a small number of infected people or patients will spread more than the basic number of transmission - more than 3, will spread more than 3 second-generation cases, which constitutes a super-transmission phenomenon, which is a very important feature of the new crown, so in the local outbreak control process, the discovery of super-transmission phenomenon or super-transmitter is not surprising. The occurrence of super-transmitters has many very important characteristics, often related to the patient's body and disease status., deputy director of the China Center for Disease Control and Prevention: This is not a new development, because the contamination of items by patients is a very common phenomenon. Domestic experience in the recent period, whether frozen products, or ordinary goods, or transport pollution, this phenomenon has been found many times, but in car parts is the first time found.