Paging Dr. Hamblin: What If the Vaccine Works Only Half the Time?
Editor’s Note: Every Wednesday, James Hamblin takes questions from readers about health-related curiosities, concerns, and obsessions. Have one? Email him at paging.dr.hamblin@theatlantic.com.
Dear Dr. Hamblin,
I heard an immunologist on the radio today say that a coronavirus vaccine could be only 50 percent effective, in which case we’d still have to “live” with the virus even after it arrives. With all the talk of the vaccine being the way out, this is terrifying. What if the vaccine isn’t totally effective? Will the virus really be with us forever?
Sydney Levitt
Toronto, Canada
No vaccine is perfectly effective. That isn’t bad news; it’s just a basic fact. No medicine is perfectly effective, no
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