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Available for over a year

Pfizer has started the first trial of a Covid-19 vaccine in pregnant women, which will ultimately involve 4,000 women in 10 countries in the Americas, Africa and Asia. Johns Hopkins medical ethicist Ruth Faden and maternal immunisation researcher Acuzena Bardiji discuss the risk/benefit considerations around vaccinating pregnant women against coronavirus. (Image: Pregnant woman receiving a coronavirus vaccine in Tel Aviv, Israel, Credit: JACK GUEZ/AFP via Getty Images.)