Pfizer Says COVID-19 Vaccine Efficacy Weakens Over Time

vaccine (Patrick T. Fallon/AFP via Getty Images)

Pfizer recently stated that data from Israel and the United States suggests that its COVID-19 vaccine efficacy drops over time and claimed that booster doses are effective at dealing with new virus variants.

Federal health officials announced two weeks ago a target date of Sept. 20 to try to roll out booster shots for the general public, although a recent study from several top scientists at the World Health Organization (WHO) and Food and Drug Administration (FDA) found that the general population doesn’t need a booster dose.

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