John Nelson (physician)

John Nelson (born in Philadelphia, Pennsylvania, date of birth unknown, died date unknown) was an American physician known for his contributions to the study and treatment of infectious diseases, particularly during the early 20th century. He graduated from the University of Pennsylvania School of Medicine and subsequently established a private practice, while also serving as a consulting physician at several Philadelphia hospitals.

Dr. Nelson's published research focused primarily on the epidemiology and management of influenza and pneumonia. He advocated for public health measures, including improved sanitation and vaccination programs, to combat the spread of these diseases. He also contributed to the development of early diagnostic techniques for pneumonia. His work appeared in journals such as The American Journal of the Medical Sciences and The Journal of the American Medical Association. He was a member of the American Medical Association and the Philadelphia County Medical Society. Further biographical details, including the specific dates of his birth and death, remain unclear due to incomplete historical records.