Much darker than my usual fare, but the image won't leave my mind until it is drawn. There is actually a lot of overt symbolism here...
The Ebola virus is described as having a shepherds hook shape, so it is here as the shepherd's crook. The skull is of a bat, it has not been confirmed but is suspected that Ebola resides in a bat species as a reservoir host. The sheep, the people (and other animals, gorillas are actually very susceptible to Ebola) it effects.
Also, when complete, this will be a bright, sunny scene at odds with the dark subject matter.

This is a very rough sketch, but any and all critique is appreciated.