Booster Dose Covid Booster Shot Coronavirus New Us Study America

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Booster Dose: The effect of the third dose of Pfizer and Modern mRNA vaccines is largely reduced by the fourth month. According to a new study by the US Centers of Disease Control and Prevention (CDC).

However, the effect of the vaccine decreases after two doses and the duration of protection after boosters differs. According to the information, this new study was based on 93,408 more severe Kovid-19 patients in the emergency department during August 26, 2021 – January 22, 2022.

The difference in the effect shown by the fourth month

The efficacy of the vaccine was estimated by comparing the odds of a positive COVID test between vaccinated and unvaccinated patients. omicron-During the prime period, vaccine efficacy in the COVID emergency department was 87 percent in the two months following the third dose but dropped to 66 percent by the fourth month. The vaccine’s effectiveness against hospitalization was 91 percent in the first two months but dropped to 78 percent by the fourth month after the third dose.

These people may need fourth dose

Speaking at the White House COVID briefing on Wednesday, President Joe Biden’s top medical adviser Anthony Fauci said it is likely that a fourth dose may be needed for a subset of people whose immunity is too weak. It can be used especially for the elderly.

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