For many years, I have been contributing to pediatric aids foundations. A very, very dear friend of mine died from the disease (it was a rare form of cancer he got because he was hiv positive) and, since then, pediatric aids has been my charity.
Here is a foundation you might consider
Elizabeth Glaser Pediatric Aids Foundation
Some of you might remember her. She was the wife of the guy who played Starsky in Starsky and Hutch. She and their 2 children died of the diease years ago after she contracted aids through a blood transfusion and never knew about it till they got ill..