The movie supports using your intellect to solve a conflict, rather than just fighting. It's about solving a very complicated problem against terrible odds and not giving up. The goal involves finding a tool for the fight, rather than a solution or a cure.
Less blood and gore than a typical zombie movie -- much of the violence takes place off screen -- but there are many fast-paced zombie attacks and lots of shootings (including children) and explosions. The attacks are intense. There's also a brutal plane crash that leaves a key character impaled through the stomach with a chunk of metal. A character chops a woman's arm off to prevent her from being infected (no blood shown). Some characters commit suicide rather than become zombies. Another character accidentally slips and shoots himself. Rotting corpses covered in white ashes are shown. Many characters die.
Images of a married couple being comfortable with each other, sleeping in the same bed, kissing, etc.
Language isn't constant, but "s--t" is used a few times, as well as "bastard," "bitch," "ass," "damn," "hell," "oh my God," and "goddamn."
A Mountain Dew can is prominently shown -- the main character accidentally kicks it while trying to be quiet. Later, he stops to drink a Pepsi from a soda machine and then lets loose dozens of Pepsi cans from the machine for a distraction. Budweiser bottles are also shown.
Drinking, Drugs & Smoking
The main character accepts a beer in one scene but isn't seen drinking it. On an airplane, he gives vodka to a woman to numb her pain while he changes a dressing. He also uses it to clean his hands and clean the wound.