In general— Except as provided in subsection (b), a covered provider who operated during a public health emergency with respect to
COVID–19 declared pursuant to section 319 of the Public Health Service Act (
42 U.S.C. 247d) shall not be liable under Federal or State law for any act or omission of such covered provider with respect to any harm arising from exposure to, or infection by, the virus that causes
COVID–19.