All members of the state board of health shall be appointed by the governor to three-year staggered terms which shall expire on June 30.

The governor shall appoint annually successors to the three board members whose terms expire that year. A vacancy occurring on the board shall be filled by the governor for the unexpired term of the vacancy.

[C24, 27, 31, 35, 39, §2219; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §136.2] 89 Acts, ch 83, §27