Joseph Michael Swango (born October 21, 1954) is an American serial killer and former licensed physician. It is estimated that Swango has been involved in as many as 60 fatal poisonings of patients and colleagues, though he admitted to only causing four deaths. He was sentenced to life imprisonment without the possibility of parole, and is serving that sentence at the ADX Florence supermax prison in Florence, Colorado. Swango was born in Tacoma, Washington and raised in Quincy, Illinois, the middle child of Muriel and John Virgil Swango. Swango's father was a career U.S. Army officer who served in the Vietnam War and was troubled by alcoholism. Upon his return from Vietnam, Swango's father became depressed and was divorced by Muriel. Growing up, Swango saw little of his father and as a result, was closest to his mother. Michael Swango was class valedictorian at his 1972 Quincy Catholic Boys High School graduation.
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