There were no differences in vaccine effectiveness in the 60+ group after a booster dose, and no differences in two-dose effectiveness for younger people. Higher risk was seen throughout the study period, from April 2021 through June 2022. But a new paper published in the journal Vaccines provides evidence that the two vaccines are not equivalent when it comes to protecting older adults against death.įor people ages 60+ who received only the initial two doses, and no booster dose, the risk of death from COVID for Pfizer vaccinees was roughly 2.5 times higher than the risk for Moderna vaccinees. CHICAGO - The mRNA COVID-19 vaccines developed by Pfizer and Moderna continue to save lives.
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