State law allows waivers for religious or moral reasons.
Wyoming Administrative Rules 206.0002.10(c) Wyoming Content and Performance Standard
(c) The State or County Health Officer shall grant a waiver to a child upon submission of written evidence of religious objection or medical contraindication. In the event a child submits written evidence in a form that the State or County Health Officer determines does not comply with subsections (a) or (b) of this subsection, the State or County Health Officer shall determine whether to grant a waiver consistent with Lepage v. State of Wyo., Dep't of Health, 2001 WY 26, 18 P.3d 1177 (Wyo. 2001), and Jones ex rel. Jones v. State of Wyo., Dep't of Health, 2001 WY 28, 18 P.3d 1189 (Wyo. 2001). (d) A waiver granted under this section is limited in scope to the immunizations referenced in the submitted written evidence of religious objection or medical contraindication.
Wyoming Statutes 21-4-309. Mandatory immunizations for children attending schools; exceptions.
(a) Any person attending, full or part time, any public or private school, kindergarten through twelfth grade, shall within thirty (30) days after the date of school entry, provide to the appropriate school official written documentary proof of immunization. For purposes of this section, documentary proof of immunization is written certification by a private licensed physician or his representative or by any public health authority, that the person is fully immunized. Documentation shall include month, day and year of each required immunization received against vaccine preventable disease as designated by the state health authority. No school administrator shall permit a student to attend school formore than thirty (30) calendar days without documentary proof of immunization. If immunization requires a series of immunizations over a period of more than thirty (30) calendar days, the child shall be permitted to attend school while receiving continuing immunization if the school administrator receives written notification by a private licensed physician or his representative or by a public health official, specifying a written schedule for necessary immunization completion within the medically accepted time period. Waivers shall be authorized by the state or county health officer upon submission of written evidence of religious objection or medical contraindication to the administration of any vaccine.