Medical professionals are early and common victims. Ebola will therefore kill a lot of people who never get ebola -- you need kidney dialysis? Chemotherapy? Surgery for a car accident? Sorry -- clinics and hospitals pretty much closed up because the professionals died or decided to stay away.
And the tertiary effects: Food production and distribution? If ebola makes an impact in the population, then there are fewer workers who can (or are willing) to engage in business-as-usual. Now some regions -- regions with no ebola -- those regions may have food shortages. Or energy shortages.
It spirals out of control and the population crash picks up speed over and over the actual spread of the virus.
And then there is the aspect of war and invasion ...
The Four Horsemen of the Apocalypse ride together.
This may seem trivial to you, but your comment is very interesting to me.
In my end times studies, I have been operating under the assumption that the four seals (Revelation 6:1-8)
Seal 1 - White Horse
Seal 2 - Red Horse
Seal 3 - Black Horse
Seal 4 - Pale Horse
happen in sequence, not in parallel.
If you have any additional insight on the Four Horsemen riding together, rather than one after another, would you please expand on your comment?
Thank you for any insight you may have to share.