It doesn't work.

Rating: 1/10 (11 December 2007)

Honestly, my friend and I turned this off about a half hour in.
"28 Weeks Later" has a hell of a pedigree to live up to. Danny Boyle's "28 Days Later" was a breath of fresh air, and one of the best and smartest horror films to be made in the past decade at least.
If it wasn't following Boyle's film, "28 Weeks Later" might've been passable as mediocre horror entertainment. But because it follows that film, it has certain rules to live up to, and a standard of quality. It fails miserably.
As a horror fan, I get used to the absurd. I get used to the ridiculous coincidences required to make a movie go. But I could NOT suspend my disbelief here, and I'm the guy willing to believe the judge in "Ghostbusters II" didn't notice the giant marshmallow man destroying New York City five years prior. Simply put, the way the outbreak...uh...breaks out again does NOT work. It requires a series of incredibly stupid decisions to get to where it is. I can handle plot holes, I don't expect a movie to be perfect, but if you're setting up your film as a serious horror film following a serious horror film...well, the movie doesn't play by the rules established for it. Characters need to be idiots to make it go.
There's no logic here. The instant you present the film with any scrutiny at all, it crumbles to dust.
Unless you're really certain you can shut your brain off, avoid this film at all costs.