The humble necrotizing fasciitis comes in fourth, but is determined to move to the top! Interesting article.
4. Flesh-eating bacteria. Necrotizing fasciitis, a life-threatening illness caused by the strep bacteria, can enter your body through a minor opening in the skin and destroy your soft tissue. There are about 650 to 800 cases per year, and about 25 percent of patients die.
Read more at 10 Things More Likely to Kill You Than Ebola.