On March 24, 2020, Dr. Jay Bhattacharya co-published an article in the Wall Street Journal, “Is The Coronavirus As Deadly As They Say?” He argued that Covid lockdowns and quarantines had no grounding in scientific fact. That was a rare opinion in those isolated days.

Anyone who spoke out against lockdowns, mask mandates, booster shots for toddlers, school closures, business shutdowns and any number of other injustices large and small that stemmed from Covid panic feels vindication today, as Bhattacharya, a sensible, mild-mannered scientist whom former National Institutes of Health head Francis Collins publicly smeared as a “fringe epidemiologist” is about,...