Very cool! The sounds and music set the ominous tone really well. On my first game I got everything infected really quickly. My second time around I got a bug that allowed me to use Cure indefinitely (though I didn´t discover this until I was 60% done with the cure) , that helped me beat the game lol. I think the Cure takes too long to develop, you could speed it up a bit.
Overall a very nice game, you could develop this further :)