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Your Tuesday Briefing
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Vaccines point the way out of the pandemic
The mRNA vaccines made by Pfizer-BioNTech and Moderna set off a persistent immune reaction that may protect against the coronavirus for years, if not a lifetime, without the need for a booster shot, scientists reported yesterday.
“It’s a good sign for how durable our immunity is from this vaccine,” said Ali Ellebedy, an immunologist at Washington University in St. Louis who led the study. It did not consider the Johnson & Johnson shot, which is made with a different technology.
Mix-and-match vaccines one dose each of Pfizer and AstraZeneca also provide strong immunity, a separate study found.