Following one of the worst 1st booster shot uptakes in the world among developed countries, of more than 112 million Americans age 50+, only ~5 million have had a 2nd booster shothttps://t.co/9u80GJOkQl by @joshulick pic.twitter.com/hyDGbbBMDc

— Eric Topol (@EricTopol) June 6, 2022