There are a few dead bodies of US special forces soldiers and hospital doctors in the lobby of the hospital.
Going a little further in this room, Carlos will see that a new creature has appeared. This is the first encounter with Hunter βs. One of them will decapitate nearby Zombie in the cutscene, showing it's brutal behavior. There are two Hunters in this room. Two Red Herbs can be obtained in this room, as well.
When Carlos enters that room an he has already collected the Vaccine Base and Vaccine Medium, the room will be mined by the time-based bombs, installed by Nikolai. On Hard Mode, Carlos has only seven seconds on timer to escape from the Hospital. On Easy Mode, there is thirty seconds for escape. After evacuating from Hospital, it will be destroyed by the bomb explosion.