“That was a breakthrough,” Hahn told me, during a talk at her lab in Birmingham. “We weren’t sure it would work.” But Santiago took the risk, cooked up the techniques, and it did work. The very first sample of SIV-positive urine from a wild chimpanzee came from the world’s most famous community of chimps: the ones at Gombe National Park, in Tanzania, where Jane Goodall had done her historic field study, beginning back in 1960.
