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Insight and Health

Should we start testing drugs and vaccines in people who are pregnant?

By Melba Newsome

9 June 2021

91av. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

A nurse helps a pregnant woman in Paris, France, during the coronavirus pandemic

MARTIN BUREAU/AFP via Getty Images

IT IS generally accepted that the best way to confirm that a new drug or therapeutic is both safe and actually works is to test it in clinical trials, administering it to a wide range of people in an attempt to discover any unexpected effects. But there is one group we don’t usually test: pregnant people, meaning pregnant women, pregnant trans men and anyone outside those categories who is pregnant.

Until recently, there was near unanimous agreement that exposing a fetus to…

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