UI animations are good, and the art is also very pleasant. It is not very clear on how to play... I would start with only to characters and then slowly start adding others.
I feel the distance between Infection and Social is too small.
I agree with everything you pointed out. Those are things I meant to correct, but we made the levels on the last 3 hours of the jam. Next time we'll organize a lot better and start making levels on day 3. Thanks for your comment! :)