(AP) — Across the United States, millions of medically vulnerable people who initially were cited as a priority group to receive the COVID-19 vaccination have gotten slowly bumped down the list. It happened as the Centers for Disease Control and Prevention modified its guidelines to give priority to the elderly and certain workers. But now numerous states are revising their guidelines to again move up those with chronic conditions or who are at risk of serious illness if they contract the coronavirus. Jen Kates is senior vice president of the Kaiser Family Foundation. She says that as of Monday, 28 states had at least partially opened up vaccine eligibility statewide to those with high-risk medical conditions.