A man is bitten by another person. The biting is shown graphically. He is later shown numerous times covered in blood, as well as numerous closeups of the bloody bite wound.
A man is dropped down a stairwell after being bitten. The biting is offscreen, but you see him hit the ground and the effects of the bite.
A man is shown being given an injection directly into a wound on his face
Throughout the rest of the film numerous other people are bitten and attacked, but all of the attacks are far less violent than mentioned above and are mostly off screen, the victims are just shown with blood on their clothes for the most part.
Attackers are fought off in numerous ways including two shootings (both obscured by darkness and shaky camera effects) and numerous physical attacks, such as the breaking of their necks, striking with a mallet and strangulation.