Bachelor, Chico State University, California, 1957. Master of Science in Public Health, University North Carolina, 1963. Doctor of Philosophy, University North Carolina, 1969.
Research associate, University of Chicago, 1967-1971; research scientist, Naval Medical Research Institute, Bethesda, Maryland., 1971-1978; research scientist, USDA Agricultural Research Svc., Beltsville, Maryland., 1978-1987; associate area director, Agricultural Research Svc., Beltsville, Maryland., 1987-1989; area director midwest area, USDA Agricultural Research Svc., Beltsville, 1989-1992; director Beltsville area, USDA Agricultural Research Svc., Beltsville, 1992-1997; deputy administrator, USDA-Agricultural Research Svc., Beltsville, since 1997.
Board directors International Trichinell Communications, since 1994. Member American Association for the Advancement of Science, American Society Parasitologists (president 1993), American Association Veterinary parasitology (president 1986-1987, Distinguished Parasitologist 1987), International Trichinosis Commission (president since 1998, Distinguished Presidential Executive award 1998).
Married Joyce Voyce, July 10, 1965. Children: Duncan, Amy.