Victim # 1 - In Episode 2, you will find a First Aid Kit, don't use it. Instead give it to the wounded guy and his mom on the bench as you pass by.
Victim # 2 - In Episode 3, after you drop off the little girl at the safe zone head down the elevator shaft and back up the other elevator shaft to reach the fifth floor. Head in to the shop on this side of the mall to find the inhaler to give him.
Victim # 3 - In Episode 5, after getting to the crate as you head to the exit you will find a man in the last building off to the right of the exit before climbing down to it with a crushed hand. Give him a First Aid Kit.
Victim # 4 - In Episode 6, get the battery on the roof in the north east and then give it to the victim on the street just below the building in the north east corner of the street below the building.
Victim # 5 - In Episode 6, on the roof to the north of the starting point you will find an elderly couple. They need the Wine you found from Episode 4