During a meeting with the Joker, he injects a syringe containing his infected blood.

You feel a little dizzy and some of the veins on your wrist slowly turn dark, but nothing special happens at that moment.

Even now that the fight is over and the Joker is captured, not a single member of the Bat-family seems to notice anything.

However, Nightwing approaches you and bumps fists, smiling warmly at you.

Nightwing: "Good job!"