This particular video does a great job (with a lovely twist at the end) at showing the effectiveness of HIV antiretroviral drugs (ARVs). There's also a followup video you can view that checks in on the woman (Selinah) as well as chatting with the folks behind the video.
Although I realize that the ARVs have been made possible by the work done in the pharmaceutical industry, and that there is a chance that Topsy's programs are facilitated by kind donations from the same industry, it's still a pity that there isn't a more sustainable system for the provision of such drugs to developing countries. Pity that these sorts of medicines are usually priced way too high for individuals like Selinah, which is why so many go untreated and so many die. Pity also that laws like Bill C-393 (which aim to explore different ways to create that sustainable market and lower that price) are being deliberately stalled in government so as to guarantee not being passed.
That kind of unfortunate reality deserves a megafacepalm.