FILE - Health care workers watch a rally by NYSNA nurses from NY Presbyterian and Mount Sinai from an overpass at Mount Sinai Hospital, Tuesday, March 16, 2021, in New York. The worldwide surge in coronavirus cases driven by the new omicron variant is the latest blow to already strained hospitals, nursing homes, police departments and supermarkets struggling to maintain a full contingent of nurses, police officers and other essential workers as the pandemic enters its third year. (AP Photo/Mary Altaffer, File)