U.S. hospitals slammed with COVID-19 patients are trying to lure nurses and doctors out of retirement, recruiting students and new graduates who have yet to earn their licenses and offering eye-popping salaries in a desperate bid to ease staffing shortages. With the virus surging from coast to coast, the number of patients in the hospital with the virus has more than doubled over the past month to a record high of nearly 100,000, pushing medical centers and health care workers to the breaking point.