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Outbreaks of Norwalk gastroenteritis, which may involve persons of all ages, occur during all seasons and in various locations. Waterborne, foodborne, and person-to-person modes of transmission have been described, and secondary person-to-person transmission is common. Outbreaks generally end in about 1 week; longer outbreaks occur only when new groups of susceptible persons are introduced, usually in the setting of a persistent common source of infection. The illness is generally mild and characterized by nausea, vomiting, diarrhea, and abdominal cramps. Vomiting is the predominant symptom among children, whereas diarrhea is commoner among adults. Forty-two percent of 74 outbreaks of acute nonbacterial gastroenteritis investigated by the Centers for Disease Control from 1976 to 1980 were attributed to the Norwalk virus. The rest resembled Norwalk outbreaks clinically and epidemiologically and were probably caused by 27-nm viral agents similar to the Norwalk virus.
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
May 1979,
The Journal of infectious diseases,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
December 2004,
Acta microbiologica et immunologica Hungarica,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
September 1973,
American journal of epidemiology,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
January 1989,
American journal of epidemiology,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
March 1986,
The New England journal of medicine,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
January 2002,
Journal of medical virology,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
April 1984,
Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
June 1972,
Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.),
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
June 2002,
Nihon rinsho. Japanese journal of clinical medicine,
J E Kaplan, and
G W Gary, and
R C Baron, and
N Singh, and
L B Schonberger, and
R Feldman, and
H B Greenberg
March 1985,
The Journal of infectious diseases,
