Two problems...
Western Europe is my biggest problem. Not only do they not have a water supply, they also have no airport, meaning that the only way to get the disease over there is for it to be transferrable with animals, and even then, you only have about a 30% chance that it'll actually cross that border.
I've killed everyone on the planet except for them numerous times, and don't even start with me when the disease starts there... I'm lucky if even with a 1 on visibility it crosses the border.
Lame.
My other complaint is the fact that your stats don't update if you're on the virus screen and not the map, also that you can't rapidly skip days.
It's a decent game, and I'll keep playing until I kill everyone on the planet, yes... but in reality there are way more airports in Europe than there are in Africa.
What planet is this?