None.

At the beginning of the film, the terrorist character smuggles an item on board the plane by cutting open their armpit, sewing it shut, and reopening it later. Although not overly graphic, you do clearly see him manipulating the open wound and inserting the contraband.

A character's eye ruptures, spraying blood onto a wall. This is seen from behind.

A character vomits blood and bile into the airplane aisle way and collapses. This is seen in full view of the camera, but the cabin lights are dimmed, obscuring the detail.

Several characters collapse and die in convulsions, while foaming at the mouth.

A decomposing body wrapped in plastic is discovered in an apartment. This body is shown several times throughout the movie, but only in fleeting glimpses, never showing the full body.

Light amounts of blood are often seen smeared on the hands, faces, and clothing of many characters.

A character is involved in a violent car crash, ending up with a bleeding head wound.

Multiple uses of the English profanity "f***", isolated to a couple short scenes, used in anger/antagonism.

A character is told by a stewardess that they have reached the limit for alcohol consumption on the airplane. Their traveling companion responds that they are drinking alcohol to sooth their fear of flying.

The entire film contains a strong, ongoing sense of threat, menace, and fear, as characters confront their being involved in a biological terrorist attack.