Some months ago the XVI International AIDS Conference was settled in Toronto. There was a huge number of different conferences about this issue, not only about medicine but about human behaviour as well.
In a nutshell, this could be the resume:
--> Scientists are pretty pesimistic about the vaccune. In fact, some of them say that it will not be developed until next century. But, how can it be possible? 100 years??!!?? For sure you know that a vaccine is just a weak version of a virus. But, how can you develope a vaccine that has to attack the Human Inmune System? That´s the issue! And even in the case this vaccine works, the AIDS virus tends to mutate frecuenly causing the vaccine to fight it becomes almost ineffective..
--> Scientists are working as well in prevention using the same drugs they use for people that have come down with this disease. The aim is to fight against spreading.
-->Finally, different studies have proved circuncised people are less likely to come down with AIDS. About 2/3 less likely. Mabe it´s because physical issues, maybe because their religion hence their behaviour, but noadays nobody knows nor is able to explain it.