Del. Code tit. 3, § 7323

Upon request of an owner, the Department of Agriculture shall cause any calves in the State to be vaccinated against brucellosis (Bang’s disease) when such calves are between the ages of 4 and 8 months except calves in herds under state and federal supervision for the control and eradication of brucellosis and operating under the test and slaughter plan, which calves need not be vaccinated unless the owners so desire. Upon such request, the Department of Agriculture shall assign a federal, state or accredited veterinarian to administer the vaccine furnished by the Department. The Department shall make the necessary rules and regulations for handling and use of the vaccine.