Dept of Health Powers.Ill. Rev. Stat. ch. 20 § 2305/2 (2009)

Authority. The Department of Public Health has supreme authority over declaring new or modifying existing quarantines. A county board of health should be created with responsibility for control of contagious diseases, including the use of quarantine for areas within the county not incorporated. Corporate authorities of municipalities have jurisdiction for quarantine extending one-half mile beyond corporate limits. Local health authorities shall establish quarantine of contacts of someone suspected of carrying a disease that requires this action.

Ill. Rev. Stat. ch. 20 § 2305/8.1

Penalties. Whoever violates or refuses to obey any rule or regulation of the Department of Public Health shall be deemed guilty of a Class A misdemeanor.

Ill. Rev. Stat. ch. 20 § 2305/2 (C)

Police Power & Limitations. Persons who are or are about to be ordered to be isolated or quarantined and owners of places that are or are about to be closed and made off limits to the public shall have the right to counsel. If a person or owner is indigent, the court shall appoint counsel for that person or owner. Persons who are ordered to be isolated or quarantined or who are owners of places that are ordered to be closed and made off limits to the public, shall be given a written notice of such order.