Pfizer Says COVID-19 Vaccine Shows '100% Efficacy' In Adolescents

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New clinical trials showed that Pfizer’s COVID-19 vaccine elicits “100% efficacy and robust antibody responses” in adolescents from 12-15 years old, the drug company announced Wednesday. The trial included 2,260 trial participants; the results are even better than earlier responses from participants ages 16-25.

Pfizer and its vaccine partner BioNTech say they will submit the results “as soon as possible” to the U.S. Food and Drug Administration and the European Medicines Agency, asking regulators to expand their authorizations for the vaccine’s use in young people.

Pfizer will submit the data “in the coming weeks,” Pfizer CEO and Chairman Albert Bourla said in a news release about the trial. Calling the results encouraging, he added that the company is acting “with the hope of starting to vaccinate this age group before the start of the next school year.”

During the clinical trial, 18 people who were in the placebo group developed COVID-19, while none of the people in the vaccinated group did. Blood tests showed a strong immune system response one month after participants received the second vaccine dose, according to a summary of test data released by Pfizer.

As for potential side effects, Pfizer said the vaccine was tolerated well in the Phase 3 trial.

Bill Chappell
Author: Bill Chappell

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