None.

A man has some infections on his face (we see him alive and dead). An infected horse is bloody (it is shot offscreen). An infected man has some blood on his chest. A man is zapped in the neck with a cattle prod. A man is shot in the chest. Two men fight and one is bitten on the arm. He shoots the other man. A woman is infected and coughs up blood.

'Fuck' is said several times, also 'shit, damn, dick, bitch, hell, ass, Jesus, Christ, oh my God'.

A man is injected with a syringe in the arm.

Some viewers might find the infected people frightening.