Whenever the Department or a local health officer has reason to believe that a case, a contact or others will not fully comply with the isolation or quarantine as required for the protection of the public health and the Department or local health officer deems it necessary to use placards, placards may be utilized. Placards may be utilized by a local health officer of a local health authority that is not an LMRO only if the specific use is approved by the Department.
28 Pa. Code § 27.66