I think the average infections a day should be changed to infection yesterday because the average is dragged down by the outliers from when you first start playing the game.
This game is terribly repetitive. All you have to do is fly low to the ground and collect windmills. I beat the game in 19 days and probably could have done it in less if I didn't get bored and crash on purpose. In my best flight I flew 3000 meters and still could have gone 3000 more if it weren't for the wind crashing my plane.