There he also did his military service as Epidemic Intelligence Officer of the Centers of Disease Control (CDC).
In 1971 he was one of the researchers who described the biological properties of the Norwalk virus (later classified as one of the human noroviruses),[5] and in a much-cited 1971 paper in the New England Journal of Medicine,[6] he described the pathogenesis of diarrhea by Escherichia coli.
His research also deals with other diarrheal agents such as Shigella,[7] rotaviruses,[8] Salmonella serotype Typhi bacteria,[9] Cryptosporidium parvum,[10] and Giardia.
His older brother Robert DuPont is a psychiatrist who in the 1970s was the director of the National Institute on Drug Abuse.
[18] They established the Herbert L. and Margaret Wright DuPont Endowed Professorship at Ohio Wesleyan University.