Illinois Code § 3

§ 3.

Exceptions. (a) The provisions of this Act shall not apply to: (1) persons enrolled in a post-secondary educational institution on or before the effective date of this Act; (2) persons enrolled less than half-time during a term or semester; or (3) persons whose instruction solely involves research, field work or study outside of a classroom environment. (b) No proof of immunization shall be required if a physician licensed to practice medicine in all of its branches certifies that any immunization required by the Department is medically contraindicated. (c) No proof of immunization shall be required if the person or his or her parent or guardian presents a signed statement that he or she objects to immunizations on religious grounds. (d) The certificate of medical exemption or statement of religious objection required by this Section shall be presented to the post-secondary educational institution. (e) Beginning with the 2025-2026 academic year, for a tetanus, diphtheria, and pertussis vaccine (Tdap) requirement, if a student who enrolls in a post-secondary educational institution cannot provide the dates on which the student received 3 or more doses of a diphtheria, tetanus, and pertussis containing vaccine, then the student must provide at least one date on which the student received a dose of the vaccine not more than 10 years prior to the beginning of the term of current enrollment. Additional doses of either a Tdap vaccine or a tetanus and diphtheria vaccine shall be administered in accordance with the Centers for Disease Control and Prevention catch-up schedule, as needed, to complete a series of at least 3 doses, including any prior doses of any of the following: (1) Tdap vaccine; (2) tetanus and diphtheria vaccine; (3) diphtheria and tetanus vaccine; and (4) diphtheria, tetanus, and pertussis vaccine. (Source: P.A. 104-39, eff. 8-1-25.)