Since then, he has continued to practice as an internist at federally sponsored community health centers in Rhode Island, where the majority of his patients have poverty-level incomes and are not fluent in English.
[31] As a graduate student, Harris collaborated with his doctoral thesis adviser, Oliver E. Williamson (Nobel Memorial Prize in Economic Sciences, 2008), in an article entitled Understanding the Employment Relation: The Analysis of Idiosyncratic Exchange.
[30][40] As recounted by Sharon Bertsch McGrayne in The Theory That Would Not Die,[41] "Several civilian researchers tackling hitherto intractable problems concerning public health, sociology, epidemiology, and image restoration did experiment during the 1980s with computers for Bayes.
By the 1980s cancer specialists had solid data about the effects of cigarette smoke on people, laboratory animals, and cells but little accurate information about diesel fumes.
In 2003, he gave expert testimony in Price v. Philip Morris, a class-action lawsuit alleging fraud in the marketing and sale concerning light cigarettes, in which the trial court entered a $10.1 billion judgment against the defendant.
[44] In 2004, he gave expert testimony in United States v. Philip Morris et al., in which the trial court found that tobacco manufacturers had violated the Racketeer Influenced and Corrupt Organizations (RICO) Act.
Harris’ role as an expert witness at trial in Cipollone v. Liggett, the first lawsuit in which a jury held the tobacco industry responsible for an individual smoker's death, has been subject to reviews.
Jeffrey Harris's expert report for Cipollone had presented a detailed chronicle of the discovery of lung cancer hazard, identifying evidence from the 1930s and the strong case for proof by 1957.
"[citation needed] Since he spent the summer of 2005 in a community health center in Guatemala, Harris has developed connections with researchers and policy makers throughout the Spanish-speaking world.
His recent collaborative research work includes studies of physician specialty choice in Spain[48][49][50][51] and the evaluation of Uruguay's tobacco control campaign.