Plague Town is the first book in the Ashley Parker series by Dana Fredsti.
Ashley was just trying to get through a tough day when the world turned upside down.
A terrifying virus appears, quickly becoming a pandemic that leaves its victims, not dead, but far worse. Attacked by zombies, Ashley discovers that she is a 'Wild-Card' -- immune to the virus -- and she is recruited to fight back and try to control the outbreak.
Mass Market Paperback: 368 pages
Publisher: Titan Books (April 3, 2012)
This one is going on my wishlist. :)