Beyond the Badlands - Badlands, #2

With St. Louis compromised, Ed and his sons find themselves once again searching for the next safe haven. Kansas City, Missouri beckons; an outpost in a dangerous and vicious wilderness. When a freak accident separates Ed from his family, he'll be forced to fight harder than ever to be reunited with them once again. But the threats are different now. The carriers are changing. They're getting smarter.
And the worst threat of all awaits where Ed least expects it. Inside the walls of their new safe haven.