First of all, it is worthy of recognition that the biggest reason for the recurrence of the local epidemic is that the virus has mutated and the replay speed is also very wide. If the virus mutates, it will increase its activity, although it will be stored in the human body for a longer time. This will also lead to the decline of human immunity, which is also a very important reason for the very serious epidemic situation in Shanghai.
Secondly, the epidemic was also due to improper local prevention and control efforts, and some people did not do a good job of isolation after obtaining the virus. Moreover, giving others a job also takes up a lot of trouble, so this is a very noteworthy problem. Because we all know that if the prevention and control efforts are improper, then a very big situation will happen in this crowded place. Moreover, it will bring great trouble to epidemic prevention and control personnel, so that they can't do their job well and accelerate the spread of the virus. This is a very noteworthy problem.
In a word, there are many reasons for this outbreak, not some. Therefore, many people are very concerned about this issue, and hope that the epidemic will recover as soon as possible, and everyone hopes to return to normal life. The above is Bian Xiao's statement, I hope it will help you.