Physicians employed by the Virgin Islands and privately practicing physicians shall report patients being treated by them for venereal disease to the Commissioner of Health. Privately practicing physicians may report their patients by number but if treatment is refused, or the patient stops treatment before being discharged cured, the physicians shall report such delinquencies by name and give such information as may be necessary to identify such patients to the Commissioner of Health. Physicians reporting patients with venereal disease shall examine or cause to be examined contacts of the patient reported. If any patient refuses to divulge identity of contacts, his name shall be reported by the physician to the Commissioner of Health. If known contacts refuse to be examined, their names, likewise, shall be reported by the physicians concerned to the Commissioner of Health.