Coronavirus in South Africa: Unravelling the mystery – BBC News

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Early results have shown a 25% infection rate in some areas, but another recent survey of participants in a vaccine trial came back with a rate of 35%, while a different group of people, living with HIV in the Western Cape hit 42%, and scientists say the real figure could be even higher in some regions, given the likelihood of false negatives as antibodies disappear over time.

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