I never said that a physician has to inform anyone outside of the wishes of the patient. Actually, as a future physician, you should know the importance of patient-doctor confidentiality as stated by HIPAA and that you probably take a refresher every year for. Breeching that trust injures the medical field. It does seem morally wrong to not disclose to the spouse, but it is up to the physician to properly educate, guide, and provide resources (tons of help groups available) to help the patient prepare to tell their significant other, it is NOT their responsibility to do it themselves, and can be legally punished (at least in the state of MA). I'm unsure of legal recourse in other states, but HIV has not been clearly defined as imminent danger in medicine and so physicians cannot be held liable unless they have been told and documented that: the parties engage in unsafe behavior on a regular basis; such behavior is actually unsafe/unprotected; the patient intends to continue such behavior even after being counseled to desist by the therapist; HIV transmission will likely occur in the future. Exposure to HIV in any other context would not be an imminent danger invoking the practitioner s duty to warn. As a clinician, it is a moral duty to followup with the patient to check if they have confided to their partner yet and continue to consel them until it happens. So before you accuse people of lacking information, why don't you ask ID attendings what they do in the clinics...