The BA.2 sub-variant of Omicron is now the dominant Covid-19 variant in South Africa and has been detected in multiple other African countries, the head of the continent's top public health body said on Thursday.
The BA.2 sub-variant of Omicron is now the dominant Covid-19 variant in South Africa and has been detected in multiple other African countries, the head of the continent's top public health body said on Thursday.
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