Re: Dr. closed his practice and patients don't know why..
I believe that they would not, though I'm not sure. Bearing in mind that this is worst case, think about why the doctor would not be telling his patients. Your mother is worried and feels like she should go get tested, which isn't necessarily a bad idea, but the risk of contracting HIV through a doctor is so slim. They wear layers of gloves when they operate so if they have a cut, nothing is going to get through. The only way he could spread it to your mother, or any other patient would be if he cut himself durring surgery, and even then the blood would have to come in contact with your mothers open wound. If that happend they would have to tell your mother.
So yes, it is possible that is why he is closing his practice, but even if he is, telling his patients will only cause fear and mistrust and likely anger and efforts at lawsuits by truly unenlightened people.
Or maybe her doctor is just a really private man who doesn't want to share his personal story with his patients.