(a) Local boards and departments of health shall be primarily responsible for the prevention and control of communicable and non-communicable disease, including disease control in public and private schools, in accordance with the regulations of the board and subject to the supervision and guidance of the department.

(b) The department shall be responsible for the prevention and control of communicable and non-communicable disease in any municipality which is not served by a local board or department of health, including disease control in public and private schools.

(c) If the secretary finds that the disease control program carried out by any local board or department of health is so inadequate that it constitutes a menace to the health of the people within or without the municipalities served by the local board or department of health, he may appoint agents of the department to supervise or to carry out the disease control program of the particular local board or department of health until he determines that the menace to the health of the people no longer exists and that the local board or department of health is able to carry out an adequate disease control program. The secretary shall require that any reasonable expenses incident to the administration of a local disease control program under this subsection, which are incurred by the department, shall be paid to the State by the local board or department of health or by the municipalities or counties which it serves.