As they report in Science, a low dose of the Moderna vaccine lasts for at least six months, and there is no indicator that vaccinated people will need a booster shot.

"This time point is critical because that is when true immune memory has formed," says LJI Research Assistant Professor Daniela Weiskopf, Ph.D., who co-led the study with LJI Professors Alessandro Sette, Dr.Biol.Sci., and Shane Crotty, Ph.D.

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