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

From West Nile and Ebola to SARS and HIV, most 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 in mammals alone, the vast majority of them awaiting discovery.

September 4, 2013 12:12 am

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