Source: [Health Times]
(People's Daily Health Client Reporter Xu Tingting Intern Reporter Yang Xiaolu) The Shigatse Joint Prevention and Control Leading Group for the Joint Prevention and Control of the New Coronavirus Epidemic issued an announcement on August 14 stating that the silent management time of Shigatse City in the entire region will be extended to 13:00 on August 21, and the flow of people will be restricted throughout the city. In principle, "no entry or exit" and "no exit at home".
Shigatse Joint Prevention and Control of the New Coronavirus Epidemic Leading Group issued an announcement on August 14 stating that the silent management time of Shigatse City will be extended to 13:00 on August 21, and the flow of people will be restricted throughout the city. In principle, "no entry or exit" and "no exit at home".
Academician of the Chinese Academy of Engineering Zhang Boli
Local positive infections in Tibet have increased significantly
According to statistics from the People's Daily Health Client reporter, since the number of confirmed cases appeared in Tibet on August 8, the number of new confirmed cases per day has not exceeded 10, but on August 13, the number of positive infections in Tibet has increased significantly. According to data reported at the press conference, Tibet added 59 new confirmed cases on the 13th, and the number of new local infections exceeded 500. According to National Health Commission data, on August 14, Tibet added 69 new local confirmed cases and 3,523 new local asymptomatic infections in .
The Health Commission of the Tibet Autonomous Region analyzed that there are three main reasons for the significant increase in the number of new confirmed cases: First, the adjustment of the positive strategy. Because Tibet is vast and sparsely populated, low pressure and low oxygen, the review time takes too long. The second is the improvement of nucleic acid screening capabilities. Due to the serious lack of nucleic acid sampling and testing capabilities in the early stage, the detection was not carried out in time. The third is caused by the characteristics of the virus. According to the current gene sequencing results, the strain of this epidemic is the Omickron BA.2.76 mutant strain, which has the characteristics of shorter incubation period, stronger transmission power and faster transmission speed. It is prone to occult transmission, multi-chain transmission, cluster infection, and the number of infections has increased significantly.
Zhang Boli, an academician of the Chinese Academy of Engineering, told the People's Daily Health Client reporter that the Omickron BA.2.76 variant and the previously discovered BA.2.75 are also variants of BA.2. Since August, six mutant strains have appeared in my country, mainly the sub-branch of BA.5. In essence, the BA.2 and BA.5 strains are both Omickron mutant strains. The epidemic in Tibet is still closely traced, and the difference in transmission between the two strains needs further research and confirmation.
BA.2 and BA.5 mutations are not much different
Previously, the main popular strain in my country was the sub-branch of BA.5. This round of mutations in Omickron BA.2 triggered the Tibet epidemic.
Zhang Boli said in an interview with the People's Daily Health Client that Omickron strain has as many as 30 mutation points compared with the previous generation of delta strain , which is popular worldwide. Its transmission power is far greater than delta , and it has a certain immune escape ability.
Zhang Boli said that compared with the difference between Omickron and Delta, the BA.5 strain has little difference in mutations compared with the BA.2 strain. At present, BA.5 strain has not completely replaced the BA.2 strain, so there will be alternating transmission of BA.2 and BA.5 in some areas. "The Omickron strain is still mutating, and submutants will continue to appear. The new BA.2 variant may also replace existing variants such as BA.5, setting off a new peak in the global epidemic. However, judging from the virus mutation rules over the past two years, the overall trend is that the infectiousness is becoming stronger and stronger, and the pathogenicity is showing a weakening change."
Zhang Boli believes that the vaccination rate of the elderly population should be comprehensively improved. Faced with the BA.2 variant strain, although the full-process vaccine protection barrier effect has been weakened, it still has a definite effect on reducing the severity and mortality rate. For people with close contact, they can play a second protective barrier. For the elderly who have high-risk groups with underlying diseases, if nucleic acid test is found to be positive for , even if the mild symptoms are mild, they will be sent to designated hospitals for observation and treatment. "The barrier moves forward, treat the disease first, cut off the disease, and prevent it from becoming severe."
Tibet's epidemic prevention and control core is in nucleic acid testing and epidemiological investigation
At present, all cities and regions in Tibet have successively launched nucleic acid testing for all employees, among which Lhasa City has completed three days and three tests. Li Jingzhong, director of the Tibet Autonomous Region Center for Disease Control and Prevention, introduced that the core of epidemic prevention and control is mainly reflected in nucleic acid testing and epidemiological investigation.Compared with the spread of the epidemic, the speed of epidemiological investigation needs to be improved.
For stranded tourists, Tibet makes every effort to provide services and guarantees, and organizes tourists in Tibet to go out to Tibet locally and nearby. On August 13, the Department of Tourism Development of the Tibet Autonomous Region issued a letter to all tourists in Tibet, calling on tourists to cooperate in epidemic prevention and control. A reporter from the People's Daily Health Client learned that many tourists are currently quarantining in hotels for accommodation fees.
Zhang Boli also said that we must strengthen the efforts to disseminate and trace the source, respond to changes, and carry out traceability and epidemiological investigation more closely, strive to make faster and more accurate traceability, ensure that close contacts and second-level close contacts are not leaked, and focus on controlling high-risk groups. "Find out the epidemic transmission chain as soon as possible, detect, isolate and treat early, and block the further spread of the epidemic. This is also an effective measure to implement the policy of preventing the epidemic, stabilizing the economy, and developing the safety."
This article comes from [Health Times] and only represents the author's views. National Party Media Information Public Platform provides information release and dissemination services.
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