PARIS, France (CNN) – French researchers have identified a new human immunodeficiency virus, the first derived from gorillas, a report said Monday. [cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/08/03/art.aids.ribbon.gi.jpg caption="A new virus is difficult to detect by tests because it is not closely related to the other three HIV variants."] The three previous HIV variants came from chimpanzees. The … Continue reading New strain of HIV identified