Wyo. Stat. Ann. § 14-4-116
(a) As used in this section 'child caring facility' means a facility required to be certified under W.S. 14-4-102.
(b) All persons over eighteen (18) months old attending or transferring into a child caring facility are required to be completely immunized in a similar manner to W.S. 21-4-309.
(c) The operator of the child caring facility shall be responsible for an audit of the immunization status of any child attending the child caring facility in a similar manner to W.S. 21-4-309.