A man's bare buttocks are seen.

One shot of a topless woman, lasting 8 seconds, as the camera zooms up showing full breasts and nipples. Another shot of nude males from the back. The topless female scene is approximately at 24 min and 35 seconds into the movie and then shown again very briefly in a shadowed flashback at 54 min and 35 seconds into the movie.

Numerous scenes with dead people, often showing their lifeless faces up close with their eyes open. They are mostly bloodless and goreless but several injuries such as cut open skin are shown. A dead man's wrist is cut open; his clotted, powdery blood pours out.

Several laboratory animals (rats and chimps) are exposed to a deadly virus which causes them to spasm and die while scientist watch.

'God' and "For God's sake" are said a few times.

Mild language only, including frequent use of "damn" and "hell".

Alcohol and tobacco use. Cannabis reference.

Despite the G rating, attributable to its overall lack of violent scenes, there are many psychologically tense scenes & some disturbing images, which is why even original advertising for the film cautions that it may be too intense for younger children.

Some people may find the sequences showing dead people unnerving and disturbing, and some, especially children, may find the laboratory animal death scenes disturbing, although it's part of vital research to find a means to stop the deadly disease from destroying all life on the planet. .