The new coronavirus is more infectious and the vaccine under development will become ineffective?

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 The new coronavirus is more infectious and the vaccine under development will become ineffective?


Recently, the public has been generally concerned about the degree of virus mutation and whether the vaccine under development can cope with the newly mutated virus. In this regard, Zhang Hongtao, associate professor of research in the Department of pathology and experimental medicine, University of Pennsylvania School of medicine, said that the virus mutation should be correctly understood. Since the outbreak began in December last year, the virus has been mutating, which is a natural change. Mutation occurs before the virus is transmitted from the intermediate host of animals to human beings. Originally, some viruses can not be transmitted to human body. However, through continuous variation, it can gain the function of invading human cells. After further mutation, the infectivity is enhanced, and the mutual transmission between human bodies can be formed. The variation of virus can be explained by qualitative change caused by quantitative change.

There are two possibilities for a mutated virus. One is that although the transmission is stronger, the consequences of infection are not so serious. Second, the spread of the virus is not only wider, but also more aggressive. The mutated virus spreads faster, but its pathogenicity does not increase and will not aggravate the disease, CNN reported on the 3rd. Another research team through quantitative analysis concluded that the virus mutation may be one of the reasons why the new outbreak spread so rapidly around the world.

Zhang Hongtao pointed out that although the new coronavirus has mutated, the mutation speed is not as fast as that of influenza virus. Even if the second wave of new coronavirus comes again, it can be considered that people who have been infected before still have immunity. Therefore, if mass immunization has been established after the first wave of infection, the second wave will not be too serious.

In view of whether the mutated virus will be more infectious, Zhang Hongtao believes that the mutation of the virus can not be stopped, and it is important to pay more attention to scientific response. First of all, dont panic. The emergence of panic will reduce the efficiency of epidemic prevention. In other words, even if the virus deteriorates, we are confident that we can overcome it. Chinas prevention and measures have reached the acme that human beings can do. Secondly, the current situation is developing in a good direction. No matter whether the virus is getting stronger or weaker, as long as the epidemic is still in place, we should take protective measures, wear masks, wash hands frequently, and have fewer gatherings.

(function(){( window.slotbydup=window .slotbydup||[]).push({id:u5811557,container:ssp_ 5811557, async:true }Who: global solidarity is very important. Who: swine influenza virus is not a new virus, and there are many candidate vaccines. Source: Health times Author: Zhang Yanting, Li Weiyi, editor in charge: Yu Zhengxin_ NBJS4652