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Delta Variant Extinguishes Beta in South Africa, Study Shows


Photo: Waldo Swiegers/Bloomberg

The more infectious nature of the delta mutation of the coronavirus has seen it almost completely displace the beta variant in South Africa, the discovery of which led to widespread travel bans.

A study, released by two South African genomics institutes on Sept. 23, showed that the delta variant, first identified in India, drove the third wave of infections in the country. Excess death data show that about a quarter of million people may have died from the virus.

“The dominance of delta was consistently observed through increased genomic surveillance during the third wave ...