As is widely reported, the Pfizer covid-19 vaccine is 95% effective. What does 95% effective mean...
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As is widely reported, the Pfizer covid-19 vaccine is "95% effective." What does "95% effective mean in this context? (Hint: 95% effective does not mean that, in the Pfizer clinical trial, 5% of vaccinated people got COVID and 95% did not.) As is widely reported, the Pfizer covid-19 vaccine is "95% effective." What does "95% effective mean in this context? (Hint: 95% effective does not mean that, in the Pfizer clinical trial, 5% of vaccinated people got COVID and 95% did not.)
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