David Leonhardt: “The United States has a vaccination problem. And it is not just about the relatively large share of Americans who have refused to get a shot. The U.S. also trails many other countries in the share of vaccinated people who have received a booster shot.”
“This is a different problem from outright skepticism of the vaccine. The unvaccinated skew heavily Republican… The vaccinated-but-unboosted more closely resemble the country as a whole. Millions of Americans who have already received two vaccine shots — eagerly, in many cases — have not yet received a follow-up. The unboosted include many Republicans, Democrats and independents and span racial groups.”

