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August 1985

An Outbreak of Norwalk-Related Gastroenteritis at a Boys' Camp

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.

Am J Dis Child. 1985;139(8):787-789. doi:10.1001/archpedi.1985.02140100049026

• 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)