. >> peter daszak: what we found as part of this w.h.o. that there is a pathway. >> stahl: peter daszak, a member of the w.h.o. team and an expert on how animal viruses jump to humans, has worked on previous viral outbreaks, including in china. he says the pathway leads not to the lab in wuhan but from wildlife farms in southern china directly to the wet market in wuhan, the huanan seafood market. >> daszak: the theory is that somehow that virus got from a bat into one of these wildlife farms, and then the animals were shipped into the market. and they contaminated people while they were handling them, chopping them up, killing them, whatever you do before you cook an animal. >> stahl: wild animals? >> daszak: yeah, these... >> stahl: like what? >> daszak: they're a traditional food. civets, these are like ferrets. there's also an animal called a ferret badger. rabbits, which we know can carry the virus. those animals were coming into the market from farms over 1,000 miles away. >> stahl: were you able to test any of the animals found in t