dr. anthony fauci. doctors don't know, correct me if i'm wrong, dr.re getting this disease. i assume it makes it harder to fight? >> that is absolutely correct, wolf. we don't know how people are getting it. you can assume if it is directly from a bat that it is exposure to a bat. but if there's a secondary host or secondary animal like a mammal, you don't understand because there's no direct epidemiological link, common link of transmisability, first a case pops up in the middle east and some cases traveled from the middle east to other countries like the uk, like tunesia and france and other places where they had people in the european and other countries who got infected in the middle east and then came back and there have been some what we call family clusters, people very closely related to the individuals, either in a family or in a health care setting, but again, to emphasize, sustained person to person transmission has not occurred, thank goodness. >> let's hope it doesn't. the united nations world health organization as you know says this is,