W. Va. Code § 19-2-4: Quarantines.

For the purpose of protecting the health of the state and to prevent the infection, contamination or reduction in the standards of products produced within the state, the commissioner of agriculture may, acting within the police power of the state, inspect and establish quarantines over all agricultural products and the means of their importation. In the establishment of such quarantine or inspection the commissioner shall give notice in writing of such quarantine or inspection area, specify its boundaries, the duration of the inspection, and the purpose thereof, and provide for notification of the proper authorities and the posting of the area.