As the country prepares for Memorial Day weekend, the unofficial start of summer, new numbers from federal aviation security officials showed that US air travel hit the highest daily level of the pandemic era on Sunday, the Washington Post reports, with 1.8 million passengers screened.Last year, Memorial Day weekend parties set off a summer surge of infections in swaths of the southern and western United States.
But this year, widespread vaccination of US adults means most can gather safely as long as they are fully vaccinated. The Centers for Disease Control and Prevention COVID Data Tracker shows that 359,849,035 COVID-19 vaccine doses have been delivered in the United States, and 289,212,304 have been administered, with 131,850,089