This game is Sick! ;)
Ok, i'm going to give a (((((!!SPOILER!!))))) for everybody who can't take over Western Europe and so can't seem to win the game.
Here's how it goes:
1) Before you actually start your first day, go to the upgrade menu and deselect "human only".
2) After 11 days of skipping, you go to the upgrade menu again and deselect "sweating"
3) When you've accumulated 8 points(should be about the 15th day) go to upgrades and deselect "vomiting"
4) Now after waiting approximately 5/6 days go to upgrades again and deselect everything. After that select "body fuilds"
5) Skip another day and select "survivabilty outside host"
6) After 4 days (day 26 in my example) go to upgrades and select "airborne"
7) Then skip for another 6 days and go to upgrades to select "waterborne"
8) The next day you start putting your points in "resistance to moisture" (day 33 in my example)
9) After 2 days, you can upgrade "resistance to heat" (Because we want to kill africa and australia as well =)
10) Use the next 8 skill points again to upgrade "resistance to moisture and incubation period"
11) After this you just keep putting skill points in the other Transmission skills.
12) Now just keep skipping, days until at least 1 person per area is infected. After this you can without harm start killing people by upgrading the lethality skills.
Good luck
Words to the creator:
What a fantastic game!!!