Upon the recommendation of the board of health of a county, and subject to the approval of the State Board of Health, quarantine may be proclaimed for a county by the probate judge thereof or, in case of his inability to act, then, by the presiding officer of the county commission and for an incorporated city or town by the mayor or chief executive officer thereof. In case of emergency, quarantine may be proclaimed by said officers without such recommendations, subject, however, to approval, modification or withdrawal by the board of health of the county.