Origin By Jessica Khoury

Pia has grown up in a secret laboratory hidden deep in the Amazon rainforest. She was raised by a team of scientists who have created her to be the start of a new immortal race. But on the night of her seventeenth birthday, Pia discovers a hole in the electric fence that surrounds her sterile home―and sneaks outside the compound for the first time in her life.
Free in the jungle, Pia meets Eio, a boy from a nearby village. Together, they embark on a race against time to discover the truth about Pia's origin―a truth with deadly consequences that will change their lives forever.
Origin is a beautifully told, shocking new way to look at an age-old desire: to live forever, no matter the cost.