Since Omicron became the dominant variant of the virus, new strains have been given names such as BA.4, BA.5 and BA.2.75. Why has none been given a Greek letter?
-2, it did so for reasons of simplicity. The first was Alpha, the second Beta, and so on . But since Omicron became the dominant variant of the virus, new strains have been given names such as BA.4, BA.5 and BA.2.75. Why has none been given a Greek letter?has multiple naming systems for different audiences. Pango, the naming system responsible for alphanumeric epithets such as BA.5, is meant for scientists.
The subvariants that have emerged since Omicron do not make the cut, though they differ from the original strain. BA.1 and BA.2, the two direct descendants of Omicron, differ from each other by 23 mutations. But the quantity of mutations alone doesn’t mean much; how these mutations affect the structure and function of the virus is far more important. BA.5, for example, has three important mutations on the spike protein, which is crucial for infection and transmission. People can catch BA.
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