Business Standard

Pfizer’s Covid-19 vaccine’s efficacy erodes over time


Pfizer Inc. said that data from the US and Israel suggest that the efficacy of its Covid-19 vaccine wanes over time, and that a booster dose was safe and effective at warding off the virus and new variants. The company detailed the data in a presentati­on it will deliver to a meeting of outside advisers to the Food and Drug Administra­tion on Friday. The panel is expected to make recommenda­tions for whether more Americans should receive booster shots. “Real-world data from Israel and the United States suggest that rates of breakthrou­gh infections are rising faster in individual­s who were vaccinated earlier,” Pfizer said in its presentati­on.

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