A long-lasting epidemic that plagued the Eastern Mediterranean in the 14th century BC was traced back to a focus in Canaan along the Arwad-Euphrates trading route. The symptoms, mode of infection, and geographical area, identified the agent as Francisella tularensis, which is also credited for outbreaks in Canaan around 1715 BC and 1075 BC. At first, the 14th century epidemic contaminated an area stretching from Cyprus to Iraq, and from Israel to Syria, sparing Egypt and Anatolia due to quarantine and political boundaries, respectively. Subsequently, wars spread the disease to central Anatolia, from where it was deliberately brought to Western Anatolia, in what constitutes the first known record of biological warfare. Finally, Aegean soldiers fighting in western Anatolia returned home to their islands, further spreading the epidemic.