Illinois Statutes Chapter 410. Public Health § 325/7. Quarantine and isolation

(a) Subject to the provisions of subsection (b) of this Section, the Department may order a person to be isolated or a place to be quarantined and made off limits to the public to prevent the probable spread of a sexually transmitted infection, until such time as the condition can be corrected or the danger to the public health eliminated or reduced in such a manner that no substantial danger to the public's health any longer exists.

(b) No person may be ordered to be isolated, and no place may be ordered to be quarantined, except with the consent of such person or owner of such place or upon the order of a court of competent jurisdiction and upon proof by the Department, by clear and convincing evidence, that the public's health and welfare are significantly endangered by a person with a sexually transmitted infection or by a place where there is a significant amount of sexual activity likely to spread a sexually transmitted infection, and upon proof that all other reasonable means of correcting the problem have been exhausted and no less restrictive alternative exists.

(c) This Section shall be considered supplemental to the existing authorities and powers of the Department, and shall not be construed to restrain or restrict the Department in protecting the public health under any other provisions of the law.

(d) Any person who knowingly or maliciously disseminates any false information or report concerning the existence of any sexually transmitted infection in connection with the Department's power of quarantine and isolation is guilty of a Class A misdemeanor.