I didn't really think about this before watching the movie, but The Invasion 
is just another zombie movie. Granted, it's an new, interesting take on zombies, but a zombie movie nonetheless. I'd probably say this is more of a "smart" zombie movie. By that, I mean the "zombies" aren't just looking for brains to feed on, but have goals of taking over the world. Who doesn't nowadays, right?
The Invasion had a feel of 28 Days Later mixed with another movie I can't quite put my fingers on. If you get a chance, I definitely think you should check it out; even if you don't like zombie movies. Like I said, this one isn't simply about running away from dead people. The only thing I didn't really like about it was the quick scene covering the cure. These movies seem to speed thru the recovery period like it wasn't even a big deal. These scenes are almost anticlimactic, but I can't quite imagine a better way to cover it. Maybe it's just me, tho.
I would be interested in a sequel for this one. With the premise for why the cure was possible, a sequel has a chance to be better than the original. This wasn't really hinted at, but it was the first thing I thought of in that last scene. I won't really touch on why I feel this way so not to ruin it for you, but we'll see.