The Lives We Lost (The Fallen World, #2)

First, the virus took Kaelyn's friends. Then, her family. Now it's taken away her home. But she can't look back—the life she once had is gone forever.

A deadly virus has destroyed Kaelyn's small island community and spread beyond the quarantine. No one is safe. But when Kaelyn finds samples of a vaccine in her father's abandoned lab, she knows there must be someone, somewhere, who can replicate it.

Determined to stop the "friendly flu" for good, Kaelyn and her friends head to the mainland in ...