Omicron BA.2 less severe than its original and Delta variants : Study

Of 1,02,315 confirmed COVID-19 cases in the US from March 3, 2020 to June 20 this year, there were 20,770 labelled as Delta variants, 52,605 labelled as Omicron B.1.1.529 variants, the original Omicron variant, and 28,940 labelled as Omicron BA.2 subvariants, researchers found.

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