Persons who are infected with or are carriers of organisms of typhoid fever, dysentery, septic sore throat, or certain other communicable diseases which might be transmitted through shellfish or who have infected wounds or open lesions on exposed portions of the body shall not be employed in the growing beds or shucking, packing, or repacking plant. If the owner or manager has reason to suspect that any employee has contracted such a communicable disease, he shall immediately exclude said employee from the growing beds or plant.