Wilder Girls by Rory Power

As Global Warming continues, ice from thousands of years before melts. The parasites inside them are released. These parasites, later named The Tox, spreads to an island called Raxter where there’s a private school for girls.

Hetty, Hyatt, and Reese, three close friends, are among many of the students who are infected with The Tox. The infected start developing second spines or hearts, claws, and gills, but those who can’t take it are perished.

Everyone has only one choice, to stay inside in quarantine and wait for food and supplies to be delivered. But when Byatt is sick enough to be taken to the isolation room, Hetty knows some things have to change.

However, by the time Hetty sneaks in to see Byatt, she’s already disappeared.

This is a great book and I would definitely recommend it to people who like the dystopian genre.