There is no particular effectivenessIsraeli scientists conducted a study to determine the effectiveness of a 4-dose coronavirus vaccine for omicron-strain disease.Discuss
According to scientists, this situation is due to the fact that The omicron strain has 37 mutations that change the structure of the SARS-CoV-2 envelope. Therefore, the virus is immune to existing vaccines. All this suggests that the development of new vaccines is needed as soon as possible.
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Source: Lenta.ru