When it is brought to the attention of a county health officer that any person afflicted with active pulmonary tuberculosis is unable or unwilling to conduct himself so as not to expose others to danger, the county health officer is directed to investigate the circumstances. If he finds that the diagnosis of active pulmonary tuberculosis is conclusive and that the person concerned is in fact a menace to others, he shall lodge a complaint with the judge of probate of the county concerned. In case of the absence of the county health officer or his failure to act any other interested person may lodge a complaint with the judge of probate, such complaint to be based on proper records and affidavits.