Ala. Code § 22-12-6: Investigations; Quarantine Pending Investigations.

The State Health Officer, or any representative designated by him, may go into any place in this state for the purpose of making such investigations as shall determine the necessity for quarantine. Quarantine may be established, pending such investigation, upon authentic information of the existence of a quarantinable disease at any place from which such disease is likely to invade the state, or any portion thereof.