Whether it was Covid’s dominance or behavioral changes that contributed most to the nonexistent 2020-2021 flu season — and many credit both — the newfound knowledge that flu transmission can in fact, be stopped, is here to stay.
Researchers at the U.K. Health Security Agency estimated that one dose of the vaccine was 78% effective at protecting against infection 14 or more days after vaccination.
Operation Warp Speed, the Trump-era program that poured billions of dollars into developing Covid shots, seemed to signal a new dawn of American vaccine making, demonstrating how decades of scientific grunt work could be turned into lifesaving medicine in a matter of months.
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