(A)   The Board of Health is hereby authorized to make reasonable rules as may be necessary regarding quarantine and vaccination, for the prevention and spread of contagious diseases, and to quarantine premises where those diseases occur for that time as may be necessary to protect the public health.
   (B)   The Board of Health shall have the power to prevent persons from entering or leaving premises on which a case of contagious or epidemic disease occurs or is found, and to placard the same with signs indicating the nature of the disease and the existence of the quarantine.
(1986 Code, § 2.30.030)