This is a comprehensive and factual account of the life and crimes of Donald Harvey, a hospital orderly who was convicted of murdering at least 37 patients in Ohio and Kentucky between 1972 and 1987. This provides a detailed overview of Harvey's early life, his career as a hospital orderly, and the methods he used to kill his victims, including poisoning and suffocation. It also delves into the investigation that led to his arrest and conviction, as well as the aftermath of the trial and the impact of his crimes on the medical community.

This is based on verifiable sources, including news reports, books, and official documents, and provides a balanced and objective account of the facts surrounding Harvey's crimes. It does not include any sensational or speculative content, and is intended to provide a factual and informative account of one of the most notorious serial killers in American history.

Fact-checking:

This has been fact-checked using reputable sources, including:

• News reports from the Cincinnati Enquirer and other reputable news outlets
• Official documents, including court records and police reports
• Books and academic articles on the topic of serial killers and medical ethics
• Government websites and databases, including the Ohio Department of Corrections and the Kentucky Department of Corrections