Moderna says COVID-19 vaccine protection wanes, makes case for booster
The Peninsula
CHICAGO - New data from Moderna Inc's large COVID-19 vaccine trial shows that the protection it offers declines over time, supporting the case for booster doses, the company said in a news release on Wednesday.
Several recent studies have suggested that its vaccine may have an edge over a similar shot from Pfizer Inc and German partner BioNTech SE in terms of maintaining efficacy over time.
Experts said the difference is likely due to Moderna's higher dose of messenger RNA (mRNA) and the slightly longer interval between the first and second shots.
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