Say this much about Donald Trump, he has a sense of political irony. Last week the president-elect tapped Stanford University’s Jay Bhattacharya to head the National Institutes of Health. Call it revenge of the Covid lockdown skeptics. Francis Collins, the NIH chief between 2009-21, derided Dr. Bhattacharya as a “fringe” scientist for urging the government to focus on protecting the vulnerable while letting others go about their lives. Dr. Bhattacharya, Martin Kulldorff,...