[The US] on Tuesday hit a milestone that some thought was unattainable: 90% of people 65 and older are at least partly vaccinated against the disease. … Wohl said political leanings that have skewed vaccination rates across the country have had much less of an impact on older adults. “The threat of covid-19 is so real for those 65 and over that it transcends many of the other issues that are complicating vaccination rates,” he said.