The state of New Hampshire and its political subdivisions shall not:
I. Require any business to require the vaccination of any customer or employee except as specified in RSA 141-C:20-a, I; or
II. Require any business to require or check for the possession of any documentation for certifying vaccination or immunity status.
III. This section shall not apply to state agencies certifying a medical facility, or a provider which is subject to a valid and enforceable Medicare or Medicaid condition of participation that imposes a vaccination requirement.