Pfizer to Seek FDA Emergency Authorization for 3rd Booster Shot to Strengthen Protection Against Delta Variant

Photo credit: Joel Saget, AFP via Getty Images

Pfizer will seek emergency use authorization from the FDA for a third booster shot of its Covid-19 vaccine, specifically intended to increase the immune response to the delta variant of the virus and to combat a drop-off in antibodies approximately six months after inoculation.

The highly contagious delta variant has spread rapidly and currently accounts for most new Covid-19 infections in the U.S.

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