In the world of medical ethics, one of the most important principles is to do no harm. Unfortunately, there are a few doctors, nurses, and other medical professionals who chose to do harm to the patients within their care.

This infographic by delves into the disturbing world of medical serial killers who murdered for greed, power, attention, revenge, and misguided mercy.

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35 of the Most Prolific Medical Serial Killers of All Time

Irma Wallace

Irma Wallace

Co-founder and Vice President of SearchRank, responsible for many of the day to day operations of the company. She is also founder of The Arizona Builders’ Zone, a construction / home improvement portal.

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