Maryland Code, Agriculture § 3-104

(a) Every local health authority of every county shall investigate each reported case of contagious or infectious disease of livestock or poultry in the county. If the authority finds a contagious or infectious disease, it shall report to the Secretary.

(b) Any person practicing veterinary medicine in the State shall report immediately to the Secretary any contagious or infectious disease among livestock or poultry of which he has knowledge. The report shall be in writing, and include a description of each animal affected, the name and exact address of the owner or person in charge of the animal, if known, the exact location of the animal, and the number of susceptible domestic animals that have been exposed to the disease. The report shall be made within 48 hours after the person knows of the disease.