Attendees at the Conservative Political Action Conference cheered talk of a lower-than-expected vaccination rate over the weekend. Tennessee is ending outreach to adolescents on vaccines, including for COVID-19, amid pressure from state GOP lawmakers. And a range of conservative media hosts and lawmakers have expressed concerns over the vaccine and the Biden administration’s outreach efforts. The resistance helps explain why over 30 percent of U.S. adults remain unvaccinated, with even higher percentages in Republican-leaning states, leaving places with lower vaccination rates at risk of localized surges of the virus. “It’s really profoundly sad to note that essentially almost 100 percent of every person who’s admitted to the hospital today with COVID could have been prevented,” said William Schaffner, an infectious disease expert at Vanderbilt University in Tennessee.