Placebo-Control Strategy After EUA Remains Big Question For Pfizer/BioNTech COVID-19 Vaccine

Pfizer intends to notify placebo patients that an EUA has been issued and offer the vaccine to keep them in the study, but FDA appears to want to maintain placebo control for as long as possible.

Pfizer Inc. and BioNTech SE intend to follow US Food and Drug Administration guidelines for coronavirus vaccine postmarket placebo controls, but will notify participants when an emergency use authorization is granted and unblind them should they choose to leave the study.

Pfizer’s plans to offer those study participants the vaccine in order to keep them in the study, but that may...

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