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Hebei Province Disease Control Expert: Results of the Second Round of Nucleic Acid Testing Unexpectedly Indicate That the Scope of the Epidemic Has Not Widened Significantly
CCTV News, Shijiazhuang, Jan 16 (Central Broadcasting Corporation reporter Tan Zhen) Shijiazhuang City’s second round of nucleic acid testing revealed a total of 247 positive people cases, including 217 cases in Gaocheng District, and Zengcun Township was among those testing positive for nucleic acid in Gaocheng El Señor. What do these 247 positive cases mean? Is it necessary for Shijiazhuang City to conduct the third full-time nucleic acid test? When will the current round of the epidemic in Hebei usher in a “tipping point”?
Shijiazhuang City detected 247 positive people in the second round of personnel tests, representing a decrease from the 354 cases detected in the first round. In 8 counties and districts positive people were detected this time, which was also slightly higher than the 13 in the first round. Shrunken, Shi Jian, director of the Emergency Office of the Hebei Provincial Center for Disease Control and Prevention, told the Voice of China reporter that 247 positive cases were expected to be detected. Shijiazhuang adopted strict prevention and control measures, and the scope of the epidemic did not expand significantly.
Master Jian: “(By this result) we were not surprised. In fact, we have more than 200 cases to see its composition, and we still feel that we still have some ideas. These more than 200 cases do not extend to many cases, and are disseminated Very quickly, it is still mainly concentrated in areas where the epidemic was relatively severe, in addition there are some sporadic cases in Yuhua district, Chang’an district, etc. After our investigation, there are basically epidemiological links and infection channels. It is clear. It does not mean that it is independent of the epidemic situation in Gaocheng district. The epidemic situation in Xingtai is also related to the epidemic situation in Shijiazhuang. Because our genetic sequencing, together with our epidemiological investigation, showed that there is still a epidemic. This range Without further significant expansion, our previous prevention and control measures remain highly effective. aces “.
As of January 13, a total of 21 patients diagnosed with a new coronary pneumonia in Shijiazhuang had reportedly undergone at least 5 nucleic acid tests before testing positive. Some people are concerned that the new coronavirus has gotten more “cunning.” Lu Hongzhou, secretary of the Party Committee of the Shanghai Public Health Clinical Center and a member of the Expert Committee on Disease Prevention and Control of the National Health Commission, told Voice of China that the characteristics of the virus have not changed significantly and that false negatives in nucleic acid tests are mainly due to the incubation period of the virus at the time of sampling.
Lu Hongzhou: “Our nucleic acid testing means that after an outbreak is discovered, a whole group of people will be tested. Right now, maybe there are only three or five people here who are about to start afterwards. infection, so your nucleic acid test will definitely be positive. Most (infected people) are still in the incubation period, the amount of the virus is not enough, or the virus has not replicated in the nasopharynx, so it can’t be detected. That’s why we have as many people 5 times 10 times (False negative). Generally speaking, we can find most people doing 2 ~ 3 times within 14 days during the first incubation period longer. In some cases, for the sake of insurance, I will add another 7 days, so I feel more comfortable. “
Shi Jian further explained that large-scale nucleic acid testing amounts to moving the inspection gate forward, and the virus is difficult to detect in the initial stage of infection. This is the reason why many confirmed cases in Shijiazhuang have tested negative multiple times.
Master Jian: “The incubation period for a case is from infection to detection of positive and then to onset. For example, I am a case. After you contact me today, it does not mean that the test is positive immediately. Afterwards of contact, during the incubation period. There is a possibility of illness, many of the cases we have screened may have caused infections at an early stage or after close contact with the case, it is just that our recent tests have detected it, which amounts to moving on. “Actively digging it up doesn’t mean he went to the hospital and found out after he got sick. Most of them were discovered through active examination. “
Large-scale nucleic acid testing is an important means of quickly discovering the source of infection and accurately understanding the characteristics of the epidemic situation. Qi Shunxiang, director of the Virus Institute of the Hebei Provincial Center for Disease Control and Prevention, told Voice of China that the next step should be to increase efforts, encrypt the frequency, conduct large-scale nucleic acid testing in key areas. and perform nucleic acid testing for all employees again, depending on the situation.
Qi Shunxiang: “If there is a source of infection that causes transmission again, then the previous work will be lost. The number of people who have a positive nucleic acid test is generally relatively high, so we need to conduct an acid test complete nucleic, especially Gaocheng. “
On the 16th, the Hebei Province epidemic prevention and control press conference announced that Shijiazhuang City and Nangong City in Xingtai will remain closed for management until January 19. Shijian believes that the 19th is a node to judge whether the Shijiazhuang epidemic situation is improving.
Master Jian: “In general, in our province, the epidemic situation in Xingtai and Langfang is relatively mild. Shijiazhuang will have to observe these two days. A lot of work is still being done. We will do a time node on the 19th to see if the situation of the epidemic has reached a basic level. control. “
Shi Jian said that Gaocheng District, as a high-risk area for the epidemic, will continue to maintain existing prevention and control strategies.
Master Jian: “We have to expand Gaocheng district a bit, and we still have a lot of work to do. We check every day and make further adjustments according to the occurrence of cases. At present, we still need to maintain the current prevention and prevention strategy. control”.
When will this round of Hebei epidemic usher in a “tipping point”? Tong Zhaohui, a treatment expert with the National Health Commission and director of the Beijing Institute of Respiratory Diseases, said in an interview with a CCTV reporter: “Today, there is actually support from nucleic acid testing equipment in all over the country. Many teams have already arrived in Hebei. I think there will be a great improvement in our nucleic acid detection capacity and quality control level. These high-risk groups, the people in high-risk areas, take nucleic acid several times and in fact no positive (cases) are found again. I think it should be a turning point. It may appear. “
