Origins by Kristen Middleton

Seventeen year old Cassandra Wild thought living in the chaos of her mother’s home daycare and dealing with her developing feelings for Bryce, her new Martial Arts’ instructor, was a struggle, until the night her world turned upside down.
When an untested vaccine kills more than just a rampant flu virus, Cassie learns how to survive in a world where the dead walk, and the living…run! From Goodreads

This was a free book. It was good and I might at a later date buy the next in the series. I have, over the last 6 months, read over 30 books that were 1st in a series so I don't know when I will get back to this series.

This book qualifies for:
Goodreads 2013 Reading Challenge
Serious Readers 2013
Tower Teams Read 2013-2
2013 Ebook Challenge
2013 1st In A Series Challenge
2013 Paranormal Reading Challenge (zombie)
2013 Why Buy the Cow? Reading Challenge (free on Amazon.uk 22nd of June 2013)