Pfizer and BioNTech began tinkering with their Covid-19 vaccine before new Omicron strains spread in the U.S. The preparations are a big reason the reformulated boosters are rolling out now.
The companies quickly pivoted thanks to earlier work tracking the evolving coronavirus and developing blueprints for potential new vaccines
Pfizer’s mRNA production process takes three days at its manufacturing facility in Andover, Mass., and one batch of mRNA yields enough for approximately 44 million bivalent doses.Before new versions oftook hold in the U.S., Pfizer Inc. and BioNTech SE had begun tinkering with their widely used Covid-19 vaccine.
In May, researchers tracking how coronavirus strains behave saw the potential for Omicron subvariants to predominate. Just in case, the companiesContinue reading your article with