Current COVID-19 vaccines may need to be reworked to ensure they are effective against Omicron and future variants of the coronavirus, a WHO body says.
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A health worker administers a dose of COVID-19 vaccine to a man in Nonthaburi, Thailand. Source: AAP
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By SBS-AFP
Presented by Irina Burmistrova, Svetlana Printcev
Source: AFP, SBS
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