Scientists are hoping for a coronavirus vaccine that is at least 75% effective, but 50% or 60% effective would be acceptable, too, Fauci, director of the National Institute of Allergy and Infectious Diseases, said during a Q&A with the Brown University School of Public Health. “The chances of it being 98% effective is not great, which means you must never abandon the public health approach.”
Dr. Stephen Hahn, the FDA’s commissioner, said last month that the vaccine or vaccines that end up getting authorized will prove to be more than 50% effective, but it’s possible the U.S. could end up with a vaccine that, on average, reduces a person’s risk of a Covid-19 infection by just 50%. “We really felt strongly that that had to be the floor,” Hahn said on July 30, adding that it’s “been batted around among medical groups.”
I know it's depressing as hell to see this on a Monday, but the sooner we get this through our heads the better. That 50% is about the same as influenza vaccines:
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