美刻意隐奥密克戎

From the perspective of the global anti epidemic situation, the probability that the severely mutated strain of Omicron virus originated in the United States is the highest, because the epidemic in the United States is the most serious. About 50million confirmed cases have been reported by the United States authorities alone, and there are still many confirmed cases that have not been detected according to the detection level of the United States. As we all know, virus mutation occurs in the process of continuous transmission. It seems that only the environment in the United States can carry the virus for such serious mutation.