[1457389]

I'd imagine limited funds were the reason. Plus, like I said, your results from a trial on patients with the virus on heavy courses of anti-retrovirals would be muddied. You wouldn't know if the antiviral or the vaccine was what was helping/hurting. Also it's hardly ethical to have a test group stop taking their proven medications for an experimental drug, which is what you would have to do to test this properly.