Waterborne gastroenteritis due to the Norwalk agent: clinical and epidemiologic investigation.
An outbreak of gastroenteritis occurred at a Pennsylvania summer camp in July 1978. Symptoms included abdominal pain (81 per cent), nausea (72 per cent), and vomiting (53 per cent); upper respiratory infection symptoms occurred in 35 per cent of the campers. Illness was associated with consumption of five or more glasses of water or water-containing beverages. Stool cultures from affected persons were negative for bacterial pathogens; however, a fourfold or greater rise to the Norwalk agent was demonstrated in serum samples of three of three ill persons tested and in none of eight controls (p < .02). Campers ill during the first session who were also present during the second session did not become ill during the second session (p < .001). (Am J Public Health 1982; 72:72-74.)
D000293:Adolescent; D002648:Child; D004196:Disease Outbreaks / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D005759:Gastroenteritis / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D008297:Male; D009663:Norwalk virus; D010414:Pennsylvania; D011795:Surveys and Questionnaires; D014777:Virus Diseases / Q000453:epidemiology* / Q000209:etiology; D014871:Water Microbiology