American authorities rejected advice to delay the second dose. Britain shows that approach's wisdom.
The U.S. will soon achieve herd immunity against the novel coronavirus, but the U.K. will get there sooner. That's because medical leaders across the pond put the priority on first-dose vaccination, delaying booster shots so that more people could get the initial shot. Fifty-nine percent of British adults are now vaccinated with one dose, vs. only 38% in the U.S.
