At Least 320,000 Viruses Lurk in Mammals, Study Finds

From West Nile and Ebola to SARS and HIV, a majority of the emerging infectious diseases that plague humans today originated in other animals. According to a new estimate, there are at least 320,000 viruses awaiting discovery in mammals alone.



via LiveScience.com http://www.livescience.com/39378-undiscovered-viruses-mammals.html