American Journal of Epidemiology Vol. 122, No. 2: 245-252
Copyright © 1985 by The Johns Hopkins University School of Hygiene and Public Health
research-article |
PERSON-TO-PERSON TRANSMISSION IN AN OUTBREAK OF ENTEROINVASIVE ESCHERICHIA COLI
1Enteric Diseases Branch, Bacterial Diseases Division, Center for Infectious Diseases, Centers for Disease Control Atlanta, GA 30333
2Division of Field Services, Epidemiology Program Office, Centers for Disease Control Atlanta, GA
3Missouri Department of Social Services, Division of Health Jefferson City, MO
Reprint requests to Dr. Jeffrey R. Harris
In the summer of 1981, an outbreak of diarrhea occurred in students and staff at a school for mentally retarded adults and children in Columbia, Missouri. Forty-one (48%) of 86 students and 38 (28%) of 137 staff members in the two dormitories with the lowest functioning students were ill. Enteroinvasive Escherichia coli 0124:H30 was isolated from 20 persons including six staff members, 13 students, and the ill mother of one of the students. Contact with students was associated with illness. Thirty-eight (33%) of the 115 student-care staff members and none of the 22 nonstudent-care staff members who worked in the two dormitories were ill (p=0.004, chi-square). In the dormitory with the most dependent students, illness in student-care staff was associated with the number of contacts with ill students and with having taken a student home during the outbreak. Control measures to interrupt transmission included separation of symptomatic or culture-positive students from those who were well, and emphasizing handwashing. The authors present these findings as the first report of person-to-person transmission in an outbreak of enteroinvasive E. coli.
Escherichla coli; mental retardation
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