Mo. Rev. Stat. § 105.1155

No public employee, as that term is defined in section 105.500, shall be required by any political subdivision to receive a vaccination against COVID-19 as a condition of commencing or continuing employment. As used in this section, the term "political subdivision" shall not include any facility that meets the definition of hospital in section 197.020, any long-term care facility licensed under chapter 198, any entity that meets the definition of facility in section 199.170, any facility certified by the Centers for Medicare and Medicaid Services (CMS), any state department or agency, or employees thereof, that are part of an onsite survey team performing federal oversight of certified providers and suppliers for CMS, or any entity or individual licensed under sections 190.001 to 190.245.