Vials labelled "Moderna, AstraZeneca, Pfizer — Biontech, Johnson&Johnson, Sputnik V coronavirus disease vaccine" are seen in this illustration picture taken on May 2, 2021.GENEVA - A World Health Organisation technical body said on Tuesday that current Covid-19 vaccines may need to be reworked to ensure they are effective against Omicron and future variants of the coronavirus.
"The composition of current Covid-19 vaccines may need to be updated to ensure that Covid-19 vaccines continue to provide WHO-recommended levels of protection against infection and disease by VOCs , including Omicron and future variants," the technical body, tasked with making recommendations to the WHO, said in a statement.
"A vaccination strategy based on repeated booster doses of the original vaccine composition is unlikely to be appropriate or sustainable." Some vaccine makers are already developing next-generation vaccines targeting Omicron, the highly contagious variant first detected in southern Africa and Hong Kong.
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