I'm not a big horror buff, but my GF wanted to see it. I didn't really like it. As we left she said "you didn't tell me there would be biting, I don't like biting". Well, I didn't know there would be biting either... It was kinda dumb, some cool action parts, but rather pointless all in all.
And what was with the ending? You could see all the newspaper clippings so you started to get an idea of what caused it all, but it left too much to the imagination. If you are going to tease at the source of the disease you might as well just come out and say it. I'm getting frustrated all over again just thinking the plot over in my head. I wish I hadn't paid to see it. It's a decent movie if you watch it for free, but if you paid to see it you got ripped off... IMO.