We saw monkey reserch into siv / hiv in action at Chobe Safari Lodge campsite while we were there.
Several very young 'researchers' and an older one were capturing vervet monekeys with an interesting trap, darting them, and then measuring and taking samples from them, leaving them in the bush under a blanket to recover.
For more tips on how we travel, see our blog at www.malonetravels2.blogspot.com.