Pfizer, Moderna Discussing When To Drop Controls In COVID Vaccine Trials With US Government

Crossover could happen along with the EUAs, Operation Warp Speed's Slaoui says, or when enough high-priority groups are inoculated, or maybe when the vaccines receive full BLA approval. Whatever officials and sponsors decide, it will create challenges for vaccine candidates still in development.

COVID-19 vaccine
Pfizer, Moderna Vaccines Moving Toward Release

Pfizer Inc. and Moderna, Inc. are working with the US Food and Drug Administration and the Trump Administration’s Operation Warp Speed on when they should allow placebo recipients in their COVID-19 vaccine trials to cross over to the active vaccine, Operation Warp Speed chief science officer Moncef Slaoui said during a press briefing on 18 November.

Pfizer announced completed results from its late stage vaccine trial the same day, and Slaoui noted that Moderna may make...

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