The U.S. has reached an important milestone in the pandemic, according to federal health officials. Going forward, COVID-19 could be treated more like the flu, with one annual shot offering year-long protection against severe illness for most people. "Barring any new variant curve balls, for a large majority of Americans we are moving to a point where a single, annual COVID shot should provide a high degree of protection against serious illness all year," said White House COVID response coordinator Ashish Jha at a press briefing Tuesday. The federal government has started rolling out a new round of boosters for...