Pfizer-Biontech Testing Booster Of Their COVID-19 Vaccine In New Trial
“The rate of mutations in the current virus is higher than expected,” Pfizer Chief Scientific Officer Mikael Dolsten said in an interview. Pfizer Inc and BioNTech SE said on Thursday they are testing a third dose of their COVID-19 vaccine to better understand the immune response against new variants of the virus. They are also in talks with regulatory authorities about testing a vaccine modified to protect specifically against the highly transmissible new variant found in South Africa and elsewhere, known as B.1.351, as a second arm of the same…
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