In addition to what others have said, keep in mind that from the time AIDS was first observed until about 1996, there was no treatment for AIDS and it was a death sentence. And during all that time, it’s not like people could say “soon we will have a treatment.” We simply didn’t know when I’d ever there would be a treatment. When if ever AIDS would stop being a death sentence. For those of us alive at that time, that’s a frightening feeling that is hard to let go of. It lingers even today. Adding to that was the stigma surrounding the disease which is a miasma surrounding feelings about it. But Leishmania has a cure. It never had all that emotion surrounding it .