Global vigilance on the new crown of variation


“This new strain is very worrying because it’s more infectious.” On the 23rd local time, British health secretary Hancock said that two patients with new coronavirus in the country were infected with the mutated strain in South Africa. “Compared with the new strain in the UK, its degree of variation seems to be higher.”. The Financial Times said on the 24th that more than 20 mutations have been found in the UK and South Africa, and the number is “extraordinary”, which has aroused the vigilance of the scientific community. On the same day, the African Center for Disease Control and prevention also said that new coronavirus variants different from those in Britain and South Africa may appear in Nigeria. This week, Switzerland, Mexico, Germany, Italy and a number of other countries have started or plan to start large-scale vaccination. In this context, whether the existing new crown vaccine can “resist” the mutated virus has attracted much attention. The British government and relevant enterprises are quite confident, but some analysts believe that it is too early to make a judgment, “the core of the problem is not whether the vaccine is effective, but how effective they can be.”. The epidemic is still spreading in many countries in the world. In addition to the risks brought by the mutated virus, international public opinion also focuses on the situation of vaccines in China. On the 23rd local time, the state government of Sao Paulo, Brazil announced that the new coronal vaccine developed by Beijing Kexing Zhongwei Biological Technology Co., Ltd. is effective. However, due to the delay in the release of specific data, Western media began to hype “China is not transparent”. The director of Brazil’s Butantan Research Institute said that the delay had nothing to do with the effectiveness of the vaccine. Kexing hopes to integrate the test data of Brazil, Indonesia and Turkey. After all, “the same vaccine can not get three effectiveness results.”.
British health secretary Hancock said at a press conference on the 23rd that two patients in the country were infected with a new strain of coronavirus that appeared in South Africa. They were contacts of cases recently returned from a trip to South Africa. Britain decided to suspend flights with South Africa from 9:00 on the 24th.
The new strains in the UK and South Africa are known as “b.1.1.7” and “501.v2”, respectively, which are believed to be related to the recent surge in confirmed cases in South Africa – the number of new cases in a single day rose from less than 3000 to more than 10000 in less than a month, Deutsche Welle said on the 24th. A record of 231000 new cases were reported in South Africa on a single day. The new coronavirus belongs to the virus that mutates slowly and appears once or twice a month on average. However, genetic analysis showed that there were more than 20 mutations in the varieties found in the UK and South Africa, the Financial Times said on the 24th. Susan Hopkins, executive director of the UK public health agency, said on the 23rd that the mutated viruses in South Africa and the UK are very different and belong to different mutations.
“The virus seems to be spreading faster in the first wave than in the second.” Karim, CO chairman of South Africa’s new coronavirus task force, said on the 24th that the severity of the second wave of the epidemic “is not yet clear.”. “We are entering a particularly dangerous stage in this pandemic.” Andrew Preston, a microbiologist at the University of bath in the UK, said, “a large number of unusual mutations appear in both new varieties almost at the same time, which makes the effective implementation of vaccination more urgent.”
On the 23rd, the number of new cases and deaths in a single day in the UK reached a new high of 39237 and 744 respectively. On the same day, Hancock announced that from the 26th, Sussex, Oxfordshire, Cambridge and other places will be upgraded to the fourth level of prevention and control, and the number of residents affected by the “closure” is expected to increase to 24 million. Hancock said the number of new cases in the UK rose by 57% last week, with nearly 19000 new crown patients hospitalized. “We can’t have the Christmas we all want.”.
And University College London Professor Christina Pagel told the times that it was too late to start putting more areas into level 4 prevention and control on the 26th. “We are in a very dangerous situation. If we just wait for the virus to spread to the north, the whole country will be caught in a sea of epidemic. We are always behind Why let people have big parties at Christmas? It’s asking for trouble. “
British housing, community and Local Government Secretary Patrick told the BBC on the 23rd that the government is evaluating the epidemic prevention measures to determine whether more stringent measures need to be taken in more parts of England. He said there were no plans for a full blockade in England, but the government wanted to ensure that the grading system was “sufficiently robust.”. However, the British “Manchester Evening News” disclosed on 23 that government officials discussed the plan to implement the national blockade from 26 at a senior meeting on 22. “The situation is developing very fast, we need to deal with it at the same speed.” The source said.
At the end of last week, the British government said that after the 70% increase in the infectivity of the mutated new coronavirus in the country, European countries first responded by introducing measures such as restricting flight entry, followed by countries from other continents. Now, “b.1.1.7” has “invaded” Asian countries and regions. Israel’s Ministry of Health said on the 23rd that four cases in the country were infected with the new strain. On the same day, a 17-year-old Singaporean girl who had studied in the UK was confirmed to be infected with the mutated virus, while Malaysia’s health director, nohishan, also said that a new strain appeared in the new crown samples collected in Sabah. On the 23rd, the Hong Kong Centre for health protection said that the viral gene sequencing of two patients was consistent with that of “b.1.1.7”. They were all returned students from the UK.
In the case of the United States, the head of the Department of ecology and evolutionary biology at Arizona State University