How long after your Covid booster are you protected - and which booster jab is most effective?
Studies suggest Covid boosters are highly effective against Omicron - but it takes a few days for immunity to build back up.
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Studies suggest Covid boosters are highly effective against Omicron - but it takes a few days for immunity to build back up.
Full ArticleResearch suggests that the Covid boosters are effective against the Omicron variant.