To reproduce promiscuously and to wreak havoc wherever they can find a home, this is the raison dtre of viruses, writes Dr. Warren Andiman, an HIV/AIDS researcher who has been on the front lines battling infectious diseases for over forty years. In Animal Viruses and Humans: A Narrow Divide, Andiman traces the history of eight zoonotic virusesdeadly microbes that have made the leap directly from animals to human populations: Middle East Respiratory Syndrome (MERS); Swine influenza; Hantavirus; Monkeypox; Severe Acute Respiratory Syndrome (SARS); Rabies; Ebola; Henipaviruses (Nipah and Hendra). He also illustrates the labor intensive and fascinating detective work that infectious disease specialists must do to uncover the source of an outbreak. Andiman also looks to the future, envisioning the effects on zoonoses (diseases caused by zoonotic viruses) of climate change, microenvironmental damage, population shifts, and globalization. He reveals the steps that we can, and must, take to stem the spread of animal viruses, explaining, The zoonoses I've chosen to write about -- are meant to describe only a small sample of what is already out there but, more menacingly, what is inevitably on its way, in forms we can only imagine.