Protagonists: Sam, Dean
Major Antagonists: None
FEATURED CREATURES: Demon (the plague is essentially Demon as well)
Over Plot: The Brothers hunt for Azazel
Major Character Deaths: None
Minor Deaths: Sarge, 3 possessed humans
Notes: infected father and mother, infected nurse all killed. Infected are hard to categorize between evil and bystander, but since it is essentially a demon possession, I will put it in both but since I am not sure how many evil entities are really there I will ascribe a death range of 0-3.
Episode Bystander Kill Count: 4 humans
Killed/Destroyed/Banished Count: 0-3 Demon