So the ending of the book was awesome! In the last section of the Hot Zone, the author travels to Africa. He travels the same way that  Monet does and visited the summit that Ebola was first discovered to see if he could find the original source. He worries that he may recieve the deadly virus, but his curiosity trumps his fears. He takes all the precautions he can but still is willing to go into the cave. At the end of the book, he comes up with a theory that may ring true. He suggests that the virus and all of its strains are merely defense meconisms of the earth. With the presnce of billions of people, innovations, and destruction of nature, the earth has created or brought about this illness to bring about a balance. The author concludes that the virus is just the begining. It would come back and that it might be even more dangerous than it was before if it is able to eventually adapt to human cells.