The "28 days" refers to the specific timeframe during which the protagonist, Jim, was in a coma following a bicycle accident.
Followed by 28 Weeks Later (2007) and the upcoming trilogy beginning with 28 Years Later (2025), which explores survival decades after the initial collapse. subtitle 28 Days Later...
The title often includes an ellipsis in its stylization, signifying the passage of time since a catastrophic "Rage Virus" outbreak decimated Great Britain. The Meaning of the Title The "28 days" refers to the specific timeframe