US researchers have vaccinated monkeys with a ‘benign' virus, and then infected them with the monkey version of HIV. In nine animals, all signs of HIV were destroyed, although seven died.
Personally I'm against tests on mammals in the lab. I believe these animals deserve a better fate than being experimented on. But there may be exceptions such as this one when a trial seems to offer a real chance to solve a human health problem as important as HIV.
This research was published online in the journal Natureon 11 September 2013.