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SciCheck’s COVID-19/Vaccination Project

How long will a person be protected if vaccinated?


This article is available in both English and Español

Scientists don’t know how long protective effects of the vaccines will last, but clinical trials, which are continuing, are trying to determine the answer.

Dr. Peter Marks, the head of the FDA’s Center for Biologics Evaluation and Research, said in December that based on the experience of people who were immunized earliest in the trials, it appears that protection against the disease lasts at least several months.