Whenever the words "State Board of Health" are used in this title, or in any chapter or subsection thereof, said words shall mean the "State Committee of Public Health," as created in Section 22-2-4, except when the State Board of Health is in actual session assembled. The State Committee of Public Health, as constituted by this chapter, shall have and possess all the prerogatives and powers and duties heretofore prescribed by law for the State Board of Health and shall act for said board. The State Board of Health may by a three-fifths vote alter or amend any action of the State Committee of Public Health, but only when said board is in session assembled.