(WTAJ) — A new study conducted on the effectiveness of Pfizer’s COVID-19 vaccine shows that protection against the virus drops to approximately 84% about four to six months after the second dose is injected.
In the company-funded survey, it was found that the vaccine’s effectiveness was strongest — at 96.2% —between one week and two months after receiving the second dose. The study also showed that effectiveness declined an average of 6% every two months. Tested in more than 44,000 volunteers, it was determined that at the four-month mark, the effectiveness drops to 83.7% in most fully vaccinated individuals.
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