Wait..."10 to 20 percent of infected people may be responsible for as much as 80 to 90 percent of transmission, "...so the 80/20 Pareto principle? 20% of the infected are doing 80% of the infecting of others? 
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.