if I control a contested war zone and am attacked by creature with infect and it does poison counters on me, does the other player gain control of the contested war zone?
if I control a contested war zone and am attacked by creature with infect and it does poison counters on me, does the other player gain control of the contested war zone?
Yes. Infect creatures still deal damage, the only difference is the end result (poison and -1/-1 counters).