This game is exactly what I am looking for. You create a virus and then infect the world with it! What can get better than this? Well, here is what I did in order to beat this game.
First, pick your method of virus. I went with Virus but was able to replicate this strategy with all three methods. Then, sell whatever “gift” you get when you start the game. This is generally fever. You want to have 0 ill affects with this virus. Next, invest in the climate you are in. If you start in Cuba invest at least level 2 in heat. Then pay attention to where the airplanes go. Do they fly in warm or cool climates? Invest in at least 2 of cold climate as well. Once finished, activate airborne and water spread methods. Insect and rodent seem to be a waste of time to me. Invest in the moisture in order to infect the water supply. Watch in glee as your virus spreads around the world. At this point, level up your disease level. Invest in whatever you feel will kill best. Fever works as a great foundation. Watch as people die and close down the hospitals. If you are lucky, all hospitals will close down before a vaccination has been invented. If not, pray that it doesn’t cure your disease. If it does, game over man, game over! At this point, grab a sandwich and watch as you destroy the known world!
Good luck and happy killing!