My sister-in-law bought this last Christmas as a "family game". At first we were all laughing - after all, the game features infection cards and diseases. How much fun could it be?
Well - it is a blast! It's a collaborative game - the players work together as a team to cure the world and you discuss strategies amongst yourselves each turn. Each player is assigned a role (medic, dispatcher, etc), but there are more roles than there are players (max 4 players), so every time you play is different because each role has a very critical function and you really miss whichever one you don't happen to have that game. And just when you think things are going good - there's an infection breakout and things go downhill fast.
The first time you play, the initial setup seems a bit confusing but it really isn't a difficult game to PLAY, but it is a very difficult game to WIN. There are different levels of gameplay - winning on "easy" isn't that easy, and we still haven't managed to win on "medium". But it is very addicting!