American Journal of Epidemiology Vol. 89, No. 5: 572-582
Copyright © 1969 by The Johns Hopkins University School of Hygiene and Public Health
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EPIDEMIOLOGIC ANALYSIS OF ENDEMIC CHOLERA IN URBAN EAST PAKISTAN, 196419661,2
Pakistan-SEATO Cholera Research Laboratory Mohakali, Dacca-12, East Pakistan
A combined retrospective and prospective analysis of 983 hospital patients with Vibrio cholerae infection was carried out in an urban cholera endemic area. The data indicate that despite the complexity of the urban population, certain patterns of infection are discernible. Cholera was seasonal; it had a peak incidence in the dry winter months and almost disappeared during the summer monsoon. The rate of infection was higher in children than adults. The disease did not occur in all parts of the city. Even in the poorer areas, outbreaks tended to localize in small communities which shared facilities for water, food, and sanitation. Multiple members of families were often infected in what appeared to be common-source outbreaks.
cholera; epidemiology
1From the Pakistan-SEATO Cholera Research Laboratory, Mohakali, Dacca-12, East Pakistan. Requests for reprints should be addressed to Dr. Martin at the Pakistan-SEATO Cholera Research Laboratory.
2The Pakistan-SEATO Cholera Research Laboratory is a part of the SEATO Cholera Research Program and is supported by the U. S. Agency for International Development, Department of State; the National Institutes of Health and the National Communicable Disease Center of the Department of Health, Education, and Welfare; and by the Governments of Pakistan, United Kingdom and other SEATO Nations. The NIH Cholera Advisory Committee coordinates the research program. These studies were supported in part by Research Agreement No. 196802 between the National Institutes of Health, Bethesda, Maryland, and the Pakistan-SEATO Cholera Research Laboratory, Dacca, East Pakistan.
3Formerly Epidemic Intelligence Service Officer, National Communicable Disease Center, Public Health Service, U. S. Department of Health, Education, and Welfare, assigned to the Pakistan-SEATO Cholera Research Laboratory. Present address: Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts.
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