April and I went and saw the sequel to "28 days later" titled "28 weeks later". We enjoyed it. It was full of action all the way through and kept you on the edge of your seat. Though I did not yelp out like a little girl, I did find myself jump several times.
The story is a good extension to 28 days later.
I would give this movie a B+. This means that I would watch this again on DVD, but would not buy it.