New data from Moderna appears to support the argument for COVID-19 booster shots, showing waning effectiveness months after the first dose.
Trial participants who were immunized more recently were 36% less likely to experience a breakthrough infection
The trial data shows 88 breakthrough cases of COVID-19 among 11,431 participants vaccinated from December 2020 to March 2021.The findings were posted as a preprint to the medRxiv server and have not yet been peer reviewed. "The increased risk of breakthrough infections in … study participants who were vaccinated last year compared to more recently illustrates the impact of waningand supports the need for a booster to maintain high levels of protection," Moderna CEO Stéphane Bancel said in a statement.
An FDA advisory committee is meeting Friday to look at the available evidence on boosters to help the agency decide whether the additional shots are warranted. There is still a lot of debate in the medical community about the need for boosters. U.S. doctors and nurses are divided about the need for them and about how the country should prioritize its vaccine supplies, according to a WebMD/© 2021 WebMD, LLC. All rights reserved.
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