Pfizer-BioNTech vaccine not troubled by variants so far, says CEO

One of the people behind the Pfizer-BioNTech COVID-19 vaccine says he has yet to see any evidence that emerging variants of the disease have found a way to defeat it.

Pfizer-BioNTech vaccine not troubled by variants so far, says CEO

One of the people behind the Pfizer-BioNTech COVID-19 vaccine says he has yet to see any evidence that emerging variants of the disease have found a way to defeat it.