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Suzanne Jenkins, VMD, MPH; Joseph T. Horman, DVM, MPH; Ebenezer Israel, MD, MPH; George Cukor, PhD; Neil R. Blacklow, MD

Am J Dis Child. 1985;139(8):787-789.

Abstract
• An acute gastrointestinal tract illness affected 213 (52%) of 407 campers and 64 (53%) of 121 staff members attending a boys' camp in the Catoctin Mountains of Maryland during the summer of 1981. Nausea was the predominant symptom for ill campers and staff members (73%), but more staff members experienced diarrhea (49%) than did campers (9%). Twenty-three individuals had more than one episode of illness compatible with the case definition. Eight of nine paired blood specimens from ill staff members showed a fourfold increase in antibody titer to Norwalk virus by radioimmunoassay. Environmental inspections and laboratory tests failed to implicate a common source of exposure.

(AJDC 1985;139:787-789)

Author Affiliations
From the Division of Field Services, Epidemiology Program Office, Centers for Disease Control, Baltimore (Dr Jenkins); the Office of Disease Control and Epidemiology, Maryland State Department of Health and Mental Hygiene, Baltimore (Drs Horman and Israel); and the Division of Infectious Diseases, Department of Medicine, University of Massachusetts Medical School, Worcester (Drs Cukor and Blacklow). Dr Cukor is now with EI Du Pont de Nemours & Co, North Billerica, Md.

Footnotes
Presented before the Epidemic Intelligence Service Conference, Centers for Disease Control, Atlanta, April 18, 1983.

Reprint requests to Division of Epidemiology, Virginia Department of Health, 109 Governor St, Richmond, VA 23219 (Dr Jenkins).

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