Home » News » Covid-19: BA.2.12.1 in New York, BA.4 and BA.5 in South Africa… why does Omicron make so many “little ones”?

Covid-19: BA.2.12.1 in New York, BA.4 and BA.5 in South Africa… why does Omicron make so many “little ones”?


Within the Omicron family… there is plenty to choose from. This variant has gradually taken over the whole world since the end of November. Over the weeks, it gave birth to many “pups”, that is to say sub-lines whose genomic structure is slightly different. The reason ? When the virus replicates naturally, “mistakes” can occur and cause mutations to appear.

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