June 12, 2024



Pfizer COVID-19 Vaccine Effectiveness Drops to 84 Percent After Six Months: Study

The Epoch Times

July 28, 2021 Updated: July 28, 2021

The effectiveness of Pfizer’s COVID-19 vaccine in preventing symptomatic infection drops by more than 10 percent after six months, the company said on July 28.

The two-dose vaccine, developed in conjunction with Germany’s BioNTech, was found to be 96 percent effective for the first two months following the second dose, according to a study from the companies’ scientists.

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