Pfizer BioNTechPfizer (NYSE:PFE) and BioNTech (NSDQ:BNTX) announced today that it dosed the first participants in a trial of its COVID-19 vaccine for pregnant women.

The companies, which developed one of the two COVID-19 vaccines to be authorized in the U.S. so far, are conducting a global Phase 2/3 study to evaluate the safety, tolerability and immunogenicity of the vaccine in preventing COVID-19 in healthy pregnant women 18 years of age and older, according to a news release.

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