A top White House health official on Monday issued a stark warning to older people about the health risk they face this fall and winter from Covid-19. Dr. Ashish Jha, head of the White House Covid task force, said everyone older than 50 and senior citizens in particular need to get an omicron booster as soon as possible. "If you're over 50, certainly if you're over 65, you've got to go get these vaccines because it actually, literally could save your life. It's a difference between life and death," Jha said during an interview with Yahoo Finance. The elderly have...