The state board of health shall place themselves in communication with the local boards of health, the hospitals, asylums, and public institutions throughout the state, and shall take cognizance of the interests of health and life among the citizens generally. They shall make sanitary investigations and inquiries respecting the cases of disease, especially of epidemics; the source of mortality and the effects of localities, employments, conditions, and circumstances on the public health; and they shall gather such information in respect to these matters as they may deem proper for diffusion among the people. They shall devise some scheme whereby medical and vital statistics of sanitary value may be obtained and act as an advisory board to the state in all hygienic and medical matters, especially such as relate to the location, construction, sewerage, and administrations of prisons, hospitals, asylums, and other public institutions. They shall at each annual session of the legislature make a report of their doings, investigations, and discoveries, with such suggestions as to legislative action as they may deem proper. They shall also have charge of all matters pertaining to quarantine, and authority to enact and enforce such measures as may be necessary to the public health.