HIV is one of the deadliest viruses encountered by humans in recent history and will kill 1.5m people this year alone, compare this to Ebola, for example, which has killed less than 5,000 so far, and you get an idea of how big a problem HIV still is. Such an obvious foe to humanity would seem to be an unlikely choice to save lives, then, but increasingly it is being used to tackle another killer disease – cancer.
Source: www.iflscience.com