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by majou
1680 days ago
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Breakthrough infections are not exactly rare. A study of almost 800k US veterans showed efficacy drops from ~90% to ~50% after 6 months, depending on vaccine; all the way down to 13% for J&J. They're still effective for preventing death, but that looks to wane too. https://www.webmd.com/vaccines/covid-19-vaccine/news/2021110... |
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