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Pfizer to seek OK for 3rd COVID-19 vaccine dose, says could boost protection against Delta variant

Pfizer says early data from a company trial suggests people’s antibody levels jump after they get a third dose.

Posted: Jul 8, 2021 4:07 PM
Updated: Jul 8, 2021 6:47 PM

WASHINGTON (AP) - Pfizer says it is about to seek U.S. authorization for a third dose of its COVID-19 vaccine.

The company said Thursday that another shot could dramatically boost immunity and maybe help ward off the latest worrisome coronavirus mutant.

Research from multiple countries shows the widely used COVID-19 vaccines offer strong protection against the highly contagious delta variant.

Two doses of most vaccines are critical to develop high levels of virus-fighting antibodies.

But those antibodies naturally wane.

So studies also are underway to tell if and when boosters might be needed.

Pfizer says early data from a company trial suggests people’s antibody levels jump after they get a third dose.

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