Covid: South Africa halts AstraZeneca vaccine rollout over new variant

“What we’re seeing from other vaccine developers is that they have a reduction in efficacy against some of the variant viruses and what that is looking like is that we may not be reducing the total number of cases, but there’s still protection in that case against deaths, hospitalisations and severe disease,” Prof Sarah Gilbert, Oxford’s lead vaccine developer, told the Andrew Marr Show on Sunday.



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