If I'm not mistaken, the infection discard pile is public knowledge, meaning I can freely look through it at anytime. That means logically I could write down the cities and then when we shuffle it back during intensify use my list to mark off which cities have been redrawn so we can get an idea of what to expect. This is ok to do right?Yes.
Rulebook, p. 7, Player Cards wrote:
Players may freely examine either discard pile at any time.