The study will test seven Covid vaccines as a booster dose: Pfizer-BioNTech, Oxford-AstraZeneca, Moderna, Novavax, Janssen from Johnson & Johnson, Valneva, and CureVac. Men and women taking part in the study will receive the booster dose on top of the Pfizer or AstraZeneca vaccines they have already received. This is not a trial about the changed vaccines, which is a study for the future,” he said. “Because using different Covid-19 vaccines as a booster has never been tested before, we do not know if different vaccine combinations will provide an adequate level of increased protection,” the researchers said. READ | Got the Covid-19 vaccine?

Source: News 24 May 25, 2021 10:07 UTC