There is considerable talk about sex between the big bossy guy and old man Hank. Jack makes known his desire for Jenny in conversations. She refuses at first. Later she dances (slow dance) with Jack and again pushes him away. Later she and Jack go out to the caboose where he makes a move on her. Initially she pushes him off again and goes to hide. Later she comes out and he says he has wanted her for many years. He then disrobes her dress to reveal her bare breasts. (Sex is implied but not shown). Afterwards they return to the office and nothing else is said about the subject from Jack.

A woman is seen in the bathroom at the train station changing clothes. She removes her bra and breasts are seen from the side, briefly. The version on YouTube has nudity pixiled out.

At one point a box is found containing porno magazines including Playboy. A discussion about this occurs between two men.

There is at least one fight between two men.

A man tries to run who has been infected. He is shot in the leg and later collapses.

Another man is shot in the shoulder or upper arm who tries to escape on a railroad car.

There are some standard or common curse words, mostly from the character Jack.

An old man is seen drinking from a bottle in a brown bag at the first of the movie. Later another man gets the bottle and brings it into the train office where one or more people have a drink.

Some smoking is seen among men.

The main shocker is a man's head seen having exploded from within. This might be frightening to young children under 7.

There is a growing level of intensity as the quarantined people await news about the virus.

Young children might be upset by a shot of a mouse whose brain looks to have exploded in a cage. Blood is seen.