Pfizer says third COVID-19 vaccine dose strongly boosts protection against Delta variant

Published July 29, 2021, 7:26 AM

by Xinhua

WASHINGTON, United States — American biopharmaceutical company Pfizer said Wednesday a third dose of its COVID-19 vaccine can “strongly” boost protection against the Delta variant.

Undated photo shows a vial of Pfizer/BioNTech COVID-19 vaccine. (BioNTech/Handout via Xinhua)

Antibody levels against the Delta variant in people aged 18 to 55 who receive a third dose of the Pfizer/BioNTech vaccine are greater than five-fold than following a second dose, according to data posted at the company’s teleconference.

Among people aged 65 to 85, the Pfizer data suggest that antibody levels against the Delta variant after receiving a third dose are greater than 11-fold than following a second dose.

Pfizer anticipates applying for emergency use authorization for a third dose of its vaccine as soon as next month, Mikael Dolsten, who leads worldwide research, development and medical for Pfizer, was quoted by CNN as saying at the teleconference.

 
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