The current Ebola outbreak was first reported in Ituri on 5 May. Ten days later laboratory analysis confirmed the presence of Bundibugyo virus, one of the four orthoebolaviruses known to cause disease in humans (two others have also been identified). Since then there have been more than 2500 confirmed cases and over a thousand deaths. This is the third known outbreak of Bundibugyo virus disease, and by far the worst.

