The Omicron variant has been linked to a substantial rise in coronavirus reinfections in South Africa compared with previous waves, according to the first detailed study into the heavily mutated strain that has sparked global alarm.
“Analysis of routine surveillance data from South Africa suggests that, in contrast to the Beta and Delta [variants], the Omicron variant of Sars-Cov-2 demonstrates substantial population-level evidence for evasion of immunity from prior infection,” South African epidemiologists concluded in the study published late on Thursday.
Higher reinfections detected recently were “consistent with the timing of the emergence of the Omicron variant in South Africa”, they added.
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