You win as soon as cures to all 4 diseases are discovered.
You do NOT have to eradicate all 4 diseases to win; just cure them. Once all the diseases are cured, the game ends and you win immediately, no matter how many cubes remain on the board.
There are 3 ways for the game to end and the players to lose:
- if the Outbreaks Track is completely filled
- if you are unable to place the number of disease cubes required on the board, or
- if a player cannot draw 2 Player cards after performing actions.