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Johnson & Johnson one-dose shot prevents COVID-19, but less than some others – Toronto Star

Johnson & Johnson’s long-awaited vaccine appears to protect against COVID-19 with just one shot – not as strong as some two-shot rivals but still pote…

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Johnson & Johnsons long-awaited vaccine appears to protect against COVID-19 with just one shot not as strong as some two-shot rivals but still potentially helpful for a world in dire need of more doses.
J&J said Friday that in the U.S. and seven other countries, the single-shot vaccine was 66% effective overall at preventing moderate to severe illness, and much more protective 85% against the most serious symptoms.
There was some geographic variation. The vaccine worked better in the U.S. 72% effective…

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