Or. Rev. Stat. § 433.121 (1)

Authority. The public health director or a local public health administrator may issue an emergency administrative order causing a person or group of persons to be placed in isolation or quarantine if the public health director or the local public health administrator has probable cause to believe that a person or group of persons requires immediate detention in order to avoid a clear and immediate danger to others and that considerations of safety do not allow initiation of the petition process set out in ORS 433.123.

Or. Rev. Stat. § 433.123 (13)

Penalties. Failure to obey a court order issued under this section subjects the person in violation of the order to contempt proceedings under ORS 33.015 to 33.155.

Or. Rev. Stat. § 433.121 (1-6)

Police Power & Limitations. Provides requirements for issuing an emergency administrative order and a system for petitioning the court for an ex parte order.