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COVID-19 Vaccine Trials for Pregnant Women Concluded Early, Confirms Pfizer

Authored by Zachary Steiber via The Epoch Times

The company said that enrollment in the study stopped in the fourth quarter of 2021 after health experts, including the U.S. Advisory Committee on Immunization Practices, began recommending the Pfizer-BioNTech vaccine for pregnant women.

The U.S. Food and Drug Administration and European Medicines Agency both agreed to the proposal to halt the study, according to Pfizer. The regulatory agencies did not respond to requests for comment. An internal email, disclosed in a court case, previously indicated Pfizer had stopped enrollment early.

The randomized, placebo-controlled study in question was launched in early 2021 after pregnant women were excluded from the phase three trial that led to the authorization of the vaccine in the United States and a number of other countries.

Pfizer and BioNTech said they expected to enroll some 4,000 pregnant women but actually enrolled just 349, according to the trial record. Some of the participants were to receive a vaccine while others would receive a placebo, according to the original protocol. Women were expected to be studied for seven to 10 months. The trial was listed as completed on Aug. 23, 2022, but no results have been released yet.

Pfizer officials told CDC advisers in September 2022 that the study was completed. Pfizer did not respond to requests for more information.

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