Instant International
Author: Cheng Yihua
2021-06-04 17:06
Last update date: 2021-06-04 17:12
Everywhere around the world has tried every means to suppress the new crown pneumonia (COVID-19) epidemic, and the variant virus has received widespread attention. Hong Kong reported that on June 4, a newly confirmed case of a 17-year-old girl was diagnosed with the N501Y mutation. Variant of the new coronavirus.
Many variant virus strains are more transmissible, and how to prevent blocking is even more important. Research results show that the key is that the public needs to complete the second shot of vaccination.
Classification of variant viruses
Since the end of May, the WHO has named the variant new coronaviruses found in the UK, South Africa and other places with the Greek letters Alpha, Beta, etc., replacing names such as B.1.1.7 and B.1.351. These variant viruses each carry multiple mutations. Among them, N501Y, 452R, 478K, etc., are all considered to enhance the spread of the virus.
The WHO named the variants of new coronaviruses found in the United Kingdom, South Africa and other places after the Greek letters Alpha, Beta, etc. These viruses each carry a variety of mutations such as N501Y, L452R, etc. The picture shows the European Center for Disease Control and Prevention listed "variants of concern" "Virus" chart (website screenshot)
Variant viruses found in the United Kingdom, South Africa and Brazil can all find N501Y mutations.
Experiments have shown that the N501Y mutation will increase the ability of the virus to bind to the ACE2 receptor on human cells, thereby enhancing the ability to infect.
How to prevent variant viruses?
Many foreign media pointed out that it is more important to complete two injections of vaccines in combating mutant viruses.
According to British government data, after the first dose of BioNTech or AstraZeneca, the vaccine is 50% effective against Alpha (a variant found in the UK) and against the Delta variant virus. (That is, the variant found in India) is even lower by 33%.
Only two weeks after the second injection, the effective rate of Fubitai vaccine against Alpha will be greatly increased to 93%, and the effective rate against Delta will also rise to 88%.
The effective rate of the AstraZeneca vaccine against Alpha and Delta will also be increased to 66% and 60%, respectively.
▼If you want to know the lives of people in other countries during the epidemic, please click to enlarge and watch:
Due to the tight supply of vaccines, people in many countries have not yet completed the vaccination, or the time for the second injection of the people has been postponed, allowing more people to get the first injection first, the Canadian Broadcasting Corporation (CBC) reported on May 29, with The crisis brought by the mutant virus has increased, and local experts have called on the government to arrange a second injection as soon as possible.
About 8% of the people in the United States have not shown up for the second shot. William Hartman, director of vaccine testing at UW Health, a local medical institution, pointed out that the second shot can fight the mutant virus. “Until you reach it, these variants Can make you sick."
▼If you want to know the lives of people in other countries during the epidemic, please click to enlarge and watch:
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