Moderna says it expects an increase in breakthrough infections and that booster shots may be needed 6 months after the second dose.
against three variants of the virus that causes the disease waned substantially 6 months after the second dose.
Because of this, the company expects an increase in breakthrough infections with a need for boosters before winter., given as a third shot, boosted levels of antibodies in 20 previously vaccinated people by 32 times against the Beta variant, by 44 times against the Gamma variant, and by 42 times against Delta.was presented in an earnings call to investors and is based on a small study that hasn’t yet been published in medical literature.
Last week, Pfizer released early data suggesting a similar drop in protection from its vaccine. The company also showed a third dose
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