Md. Code, Health - General § 21–328

(a) A person may not knowingly employ any individual to work in any area or capacity in a food establishment in which there is a likelihood of transmission of disease to patrons or other employees of the food establishment if the individual employed:

(1) Has a communicable disease that may be transmitted by food; or

(2) Is a carrier of a communicable disease that may be transmitted by food.

(b) An individual may not knowingly work in any area or capacity in a food establishment in which there is a likelihood of transmission of disease to patrons or other employees of the food establishment if the individual:

(1) Has a communicable disease that may be transmitted by food; or

(2) Is a carrier of a communicable disease that may be transmitted by food.