Major study into the effect of the second corona jab after Janssen’s jab

Four academic hospitals will investigate whether it is useful to give people who have been vaccinated with Janssen’s corona vaccine a second shot. In principle, one shot is sufficient for this vaccine, certainly to prevent serious illness from the virus. “Due to the increasing circulation of certain variants of the coronavirus, it is possible that an additional vaccination is necessary after one shot of Janssen,” reports Erasmus MC.

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