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mRNA Vaccine Effectiveness (VE): 1st Dose

Posted on: June 30, 2021

These BC estimates are the first globally to show that a single dose of mRNA vaccine protects against the Gamma variant. Substantial 1st dose protection in older adults reinforces the option to defer the 2nd dose where vaccine supply is scarce and broader 1st dose coverage is needed.

CDC mRNA Vaccine Effectiveness (VE): 1st Dose