http://blogs.channel4.com/tom-clarke-on-science/terrifying-mathematics-ebola/1329#sthash.ogernvkw.dpuf
“The terrifying mathematics of Ebola”
http://www.nytimes.com/2014/09/11/world/africa/stabbing-with-syringe-in-nigeria-raises-concerns-of-ebola-as-weapon.html
“Stabbing With Syringe in Nigeria Raises Concerns of Ebola as Weapon”