Maryland Code, Health-General § 18-208

(a)(1) When a health officer has reason to believe that a disease that endangers public health exists within the county, the health officer shall:

(3) A county board of health shall pay the necessary and legitimate expenses that a health officer incurs under this subsection.

(1) Shall act immediately to prevent the spread of the disease;

(2) Within 24 hours after receiving notice of the disease, shall give the Secretary all information obtained on the disease; and

(3) Shall cooperate with the Secretary to prevent the spread of the disease.

(c)(1) When a health officer knows of any unusual disease or mortality in the county or a contiguous county, the health officer promptly shall give the Secretary notice of the disease or mortality.

(2) If a health officer is unsure whether a disease is infectious or contagious, the health officer shall notify the Secretary.