The "helper gene" discovery is the only thing that's important ~ it means that vectors thought to be impossible, are actually quite probable in Africa.
Whereas it might take a million viral bodies to successfully implement a non-nilotic person, it might take as little as 1 viral body to do the job in a person of the groups with the gene.
Wouldn't matter what their behavior was, how needles are handled, etc. Just means that they're going to get AIDS and nothing can be done about it.
The population reduction fanatics will be satisfied with the outcome. Then the Chinese can recolonize Africa.