RIO DE JANEIRO, BRAZIL - The protection provided by Moderna Laboratories' vaccine against the coronavirus lasts at least six months, according to research published Tuesday in the New England Journal of Medicine. The articles echoes what drugmaker Pfizer said last week about its own vaccine, which works similarly to that of Moderna
Both reports were based on follow-up tests of dozens of people who received the shots during studies that led to the vaccines' use. The studies were conducted before worrisome new variants of the coronavirus emerged and began to spread.
Another report published in the same medical journal warned . . .
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