The Blood Pack is an item that appears in The Hive scenario of Resident Evil Outbreak and the Underbelly scenario in Resident Evil Outbreak File #2. They contain the blood of patients, collected during their time at the hospital. The survivors can use the blood packs to distract the Leech Zombie while being chased through the hospital. In one particular room, a blood pack can be used to distract the Leech Zombie while manipulating the room temperature to destroy the leeches. The Mega Bites in Underbelly can also be distracted by using blood packs. However, they will grow larger once they finish feasting.