The physics in this game are spotty at best, meaning restarts until it does exactly what it's supposed to do, over and over. Couple that with some very timing specific levels, and it's more frustrating than fun. It has potential, but is marred by these flaws.
A little play testing would have revealed that this game cannot be won with any sort of strategy. You either infect every nation, or Madagascar closes its borders when someone sneezes in China. This game has a lot of wasted potential.