What is BA.2.38?Why is the virus mutated?how to respond?

After this round of epidemic, what is BA.2.38, a new crown pneumonia virus transmitted in Gansu Province, refers to? Why is the virus mutated? In the face of the difficulty challenges facing the current epidemic prevention and control, how should we deal with it? In response to the doubts of this series of citizens, Wang Xuxia, chief physician of the Gansu Provincial Disease Prevention and Control Center, answered one by one at the press conference of the New Crown Crown Pneumonia Epidemic Extraction (33:00).

Why does the virus mutate?

In layman's speaking, the copying of viruses is similar to biological reproduction, which is the process of pro -generation. However, the virus is to be transmitted by self -replication by invading the corresponding cells. Take the new coronal virus, for example, it must copy the whole genome sequence every time it is transmitted. This sequence is formed by the four "letters" (alkaline base) in Augc in series in a certain order, with a total of about 30,000 "letters". In copying, some "letters" may make mistakes. Most of the time, this error does not affect the characteristics of the virus, but when the number of replications is large, the accumulated errors will increase accordingly, which will cause the characteristics of the characteristics of the child and the parent virus. This is the virus mutation. Essence The more opportunities to spread virus, the greater the chance of mutation.

What is the BA.2.38 of the new crown pneumonia virus Omikon?

Since the world's first new crown pneumonia in 2019, the new coronal virus has continued to mutate, and its mutant plants are classified by Greek letters. From Alpha, Beta, Gamma, Delta, to Omikon, the new crown virus has never stopped mutation. Omikon has evolved different sub -branches such as BA.1, BA.2, BA.3, BA.4, BA.5.

Monitoring data shows that as of now, the this round of the Gansu province has spread at least 5 generations. As the prevention and control measures have been strengthened, the rate of spreading of the epidemic has slowed down. The interval interval between communication has been delayed from 1.93 days in the early stage of the epidemic to 2.3 days; the propagation power (effective regeneration) dropped from 4.4 to 1.76 in the early days of the epidemic. But it is still higher than the spread of the epidemic in Gansu Province in March this year.

How should I deal with it?

Because the spread of new mutant strains is faster and more concealed, the epidemic prevention and control faces many difficulties, and put forward higher requirements for prevention and control work.

First of all, it is necessary to grab time. After discovering a positive infection, you must run with the virus, to strive for time, move rapidly, and strive to isolate the infected person before the virus transmission to reduce the scope of communication.

Secondly, we must not leave the dead ends, do not leave a household, and do not miss one person. Adhere to the traceability of the current and the detection of nucleic acid detection, "divide into the combined strike", and dig deep into the close inspection of the close contact and the close connection. Form a new source of infection and cause new communication.

Furthermore, we must take scientific and strict control measures. The ninth edition of the new crown pneumonia prevention and control plan clarifies the standards and management requirements of medium and high risk areas. It is necessary to delineate medium and high risk zones in time. At the same time, it also needs the joint participation and active cooperation of the whole society. Everyone must fulfill the "responsibility of keeping the soil" and actively cooperate with the epidemic prevention and control measures.

Adhere to the "three -piece epidemic prevention": wearing masks, social distance, personal hygiene; keep in mind the "protection of the five protection": the mask should be worn, the social distance should be left, the cough and sneezing should be covered, the hands should be washed frequently, the windows are still still, Try to open.

(Source: New Gansu client)

- END -