Will the Pfizer and Moderna Covid-19 vaccines be effective against the new strain?
SARS-CoV-2, the virus that causes Covid-19, generally accumulated mutations slowly over time, but this new variant had many mutations accumulated quickly. In particular, I spend a lot of time studying the effects of vaccines on pathogen development and the effects of pathogen development on the effects of vaccines. The differences between the old and new viruses include 23 mutations in the virus' genetic code that changed four viral proteins.
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