The world Grant has created is great, and I enjoy spending time learning more about it, but it's almost like Grant invested all her time in creating the world, but forgot to create compelling characters to inhabit that world, or a plot worthwhile enough to drag the reader along. 'Feed' starts off well enough, Georgia and Sean are interesting at first glance, and accomplish the task of introducing the reader to this brand new world surprisingly well. The plot is is serviceable, the conspiracy well enough put together that it kept me guessing until the end. The main selling point to the actual story is that Grant is willing to kill off her main character right at the end. The death of Georgia hits hard even if you know it's coming.
'Feed' builds a lot of goodwill towards the reader, but the next two novels in the book squander it. It's an old SF cliche that if a series goes on long enough the later books will end up walking all over what you loved about the series in the first place. I couldn't understand the thinking behind bringing Georgia back to life, and the justification within the story is even harder to put my finger on. I've had plenty of time to think over these choices within the book and still the best I can come up with is that Georgia was brought back to life so the CDC could somehow exert control over Sean, even though he was only brought out of obscurity through the CDC's own convoluted plot. Honestly about midway through the second book I have no idea why things are happening.
Grant creates a very original world but uses a plot that should have come out of a Dan Brown book to navigate around it. I'm not real big on conspiracy theories that involve more than two people in a room keeping a secret, much less ten thousand people keeping millions of murders quiet. Grand conspiracy theories taken down by a couple scrappy kids in a van should be left to Scooby Doo, or Goonies, they did it best.
I'm not really one for writing reviews that bang on writers. I'm not a fan of horror fiction but I thought Grant created an interesting world. She did plenty of research into virology and injected a degree of realism into a sub-genre not exactly known for it. Like a lot of SF series Grant goes astray in the later books, she's not the first author to do this, and by far not the worst (I'm looking at you Philip Jose Farmer). The things Grant does well in the series she does really well, I just wish she could have done a better job of maintaining it throughout the series.