Quarantine (The Book Series) By Lex Thomas Wiki

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 is a book series written by Lex Thomas. It is based about an ifected that spread through North America, and about survivors in McKinley High School. Kids are turned into infected and if people over the age or exactly 18 breath the toxicity put off by Infected, they die. When a person is about to turn 18, they are "Graduated" and lifted out of the school.

The book shows 3 main characters: Will, his brother David, and Lucy.