Vaccine Manufacturers

Pfizer Vaccine Demonstrates 100% Efficacy in 12-15 Year Olds

Today, Pfizer-BioNTech published a press release announcing the results of their Phase 3 clinical trial in adolescents. The trial enrolled 2,260 participants in the United States, aged 12 to 15, with 1,129 participants in the placebo group and 1,131 participants in the vaccinated group. In the trial, 18 cases of COVID-19 infections were observed in the placebo group. Comparatively, none of the participants from the vaccinated group contracted COVID-19.

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Astrazeneca’s COVID-19 Vaccine Demonstrates 76% Efficacy

AstraZeneca has released an updated statement revealing their vaccine demonstrates 76% efficacy against symptomatic COVID-19 and 100% efficacy against severe COVID-19 and hospitalization. They previously stated a 79% efficacy based on data through February 17, 2021. Experts credit this discrepancy to a rounding error.

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NIH Releases Statement Regarding AstraZeneca Vaccine

The National Institute of Allergy and Infectious Diseases (NIAID) published a news release today regarding AstraZeneca’s COVID-19 vaccine clinical trial, after being notified by the Data and Safety Monitoring Board that outdated information “may have provided an incomplete view of the efficacy data” (1). Which information is outdated has not been specifically disclosed. This statement was released one day after the NIH published a media advisory that the investigational AstraZeneca vaccine prevents COVID-19. 

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