A public safety employee who is exposed to a contagious disease is entitled to reimbursement from the employing governmental entity for reasonable medical expenses incurred in treatment for the prevention of the disease if:
(1) the disease is not an “ordinary disease of life” as that term is used in the context of a workers’ compensation claim;
(2) the exposure to the disease occurs during the course of the employment; and
(3) the employee requires preventative medical treatment because of exposure to the disease.