ONE more reason not to eat our close living relatives. Of the three strains of HIV known to infect humans, we know that two – the one causing the global AIDS epidemic and another that has infected a small number of people in Cameroon – came from a chimpanzee virus called SIV. The source of the third strain, which infects people in western central Africa, was a mystery. Now we know it came from gorillas.
Martine Peeters and colleagues at the University of Montpelier in France have discovered the virus in the droppings of gorillas living in remote forests in Cameroon (Nature…
