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. The new crown pneumonia variant strain, called Delta, has sounded the new alarm for the global epidemic. In just a few days, more than 10000 new confirmed cases returned to the UK, of which 99% were infected with delta virus; Nearly 90% of new confirmed cases in Moscow are also infected with the virus; It is also the cause of the recent outbreak of small-scale epidemic in southern China“ The delta strain is becoming the world's leading COVID-19 mutant, "Swami, chief scientist of WHO, said 18. Russian President Per Skov said novel coronavirus pneumonia was "cunning". German Chancellor Merkel warned that "because of the new increase in new cases, we can not pretend that the new crown pneumonia epidemic is over." Even in the United States, where the delta virus infection rate is only 10%, President Biden and the director of the Centers for Disease Control and Prevention (CDC) have issued warnings against Delta, calling on people to get vaccinated quickly. Yang zhanqiu, Professor of Virology Research Institute of Medical Department of Wuhan University, told the global times on the 20th that compared with the previous variant strain, delta strain has only one or two different gene loci, "which will not affect the protection of the existing vaccine." In the afternoon of the 20th, the Shenzhen epidemic prevention and control press conference announced that as of the 19th, 38 positive cases had been reported from ca868 international flight arriving in Shenzhen on June 10, among which 19 cases were highly homologous with the confirmed cases reported on June 14, Jiang, Zhu and Xiao, all of which were delta mutants < p > Thailand's Bangkok Post reported that "hundreds of flights" have been cancelled and entry control has been strengthened at Shenzhen airport, China, after workers in the airport restaurant were detected to be infected with the delta virus. In response, Shenzhen Airport clarified on the evening of the 18th that as of 16:30 on the 18th, 460 inbound and outbound flights had been implemented, 63 inbound and outbound flights had been cancelled, and the flights were generally normal The Shenzhen epidemic prevention and control press conference on June 20 also introduced the current situation of "comprehensive epidemic prevention by sea, land, air and rail" in Shenzhen, stipulating that from June 20, all passengers leaving Shenzhen and other provinces need to provide nucleic acid test negative certificate within 48 hours < p > experts believe that the delta virus strain should not be taken lightly, but it is not impossible to prevent. Yang zhanqiu told the global times on the 20th that according to public information, the delta virus strain is different from the previous strain in the heterotopic point, with shorter incubation period and easier to spread“ On the one hand, the spread of delta virus is fast and the number of patients is large, which has been proved by the epidemic situation in India. On the other hand, the incubation period becomes shorter, which makes it easier to control the epidemic. Yang zhanqiu believes that the best way to deal with the delta virus strain is to quickly popularize vaccination. Yang zhanqiu believes that the infection of individual newly diagnosed cases after vaccination with domestic vaccines is related to the length of time after vaccination. Only when enough antibodies are produced after vaccination can the infection be prevented. In addition, no matter which kind of new coronal vaccine can achieve 100% protection rate < p > as of the 19th, the news that China had received more than 1 billion doses of new crown vaccine shocked the world. According to CNN, China has three times as many new vaccines as the United States, accounting for nearly 40% of the world's 2.5 billion doses of vaccines. Given the late start of vaccination in China, this figure is particularly striking. However, Yang zhanqiu told the global times that the amount of one billion doses is far from reaching the effect of mass immunization. It is necessary to reach the amount of two billion doses, that is, about one billion people will be vaccinated, and about 700 million people will be vaccinated in proportion, so as to reach the level of mass immunization As a matter of fact, the spread of the delta virus first broke the illusion of several countries committed to "mass immunization". In the UK, where 60% of adults have completed two doses of the new crown vaccine, the epidemic has rebounded sharply recently. According to Sky News, 10321 more confirmed cases were reported in the UK on the 19th, which is the third day of continuous increase of more than 10000 cases. Novel coronavirus pneumonia patients admitted to public hospitals in Britain have increased significantly compared with the previous week. Sky News quoted hospital statistics as saying that the vast majority of patients admitted to the hospital were not vaccinated with the new crown vaccine. The overall trend was younger, and the infected patients were basically the delta virus strain < p > Rolling Stone magazine of the United States said on the 19th that the infectivity of delta virus strain is 43% to 90% higher than the previous new coronavirus strain, which is the main cause of 99% of new cases in Britain. This strain first appeared in India, and has spread to more than 80 countries and regions in just six months after it was found < p > "how to deal with the new coronavirus strain from India?" Novel coronavirus pneumonia in Moscow nearly doubled in the past two days, and the death rate in the whole country increased by 14% over the past two days, the news of Russia said. On the 18 day, 17262 Russian residents were confirmed to be infected with COVID-19, of which more than 9000 new cases were reported in Moscow. Moscow mayor Sobyanin said novel coronavirus pneumonia was found in 89.3% of the new crown pneumonia patients in Moscow. The virulence of this strain is many times stronger than that of the previous variant. Only a quarter of the capital residents have antibodies to the virus. Russian immunologist zemchugov said that if a person is infected with several other new coronavirus strains, it will only infect 2-3 people on average, while the infected person of delta virus strain will infect 6-8 people < p > the Financial Times said on the 20th that the delta virus strain has accounted for 96% of the new cases in Portugal, and has accelerated to appear in Germany, France and Spain. People are worried that the delta virus strain will change the trend that the number of new infections and deaths in the EU has declined in the past two months. The German government warned on the 18th that the delta strain will become the mainstream strain in Germany by autumn at the latest. According to the Wall Street Journal, Indonesian health officials found that the delta virus strain has dominated the capital, Jakarta and other places According to the Wall Street Journal on the 19th, delta virus infection accounts for 9.9% of the new cases reported in the United States, but CDC director wallensky warned on the 18th that delta virus will become the main strain in the United States in the next few months. She said the delta strain is more infectious than the alpha strain currently prevalent in the United States, which originated in the United Kingdom“ We've seen alpha quickly become the main infection strain in a month or two, and I expect delta to be the same in the United States

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2023-03-22 10:04:36