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Pathogen-Specific Risk Factors and Protective Factors for Acute Diarrheal Disease in Urban Brazilian Infants

Paul A. Blake, Sonia Ramos, Kristine L. MacDonald, Vilma Rassi, Tania A. Tardelli Gomes, Cecile Ivey, Nancy H. Bean and luiz R. Trabulsi
The Journal of Infectious Diseases
Vol. 167, No. 3 (Mar., 1993), pp. 627-632
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/30112628
Page Count: 6
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Pathogen-Specific Risk Factors and Protective Factors for Acute Diarrheal Disease in Urban Brazilian Infants
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Abstract

To evaluate potential risk factors and protective factors for acute diarrheal disease in urban infants, 500 infants ≤12 months old with diarrhea and 500 age-matched control subjects coming to a Sao Paulo emergency room were studied. On multivariate analysis, these apparently sporadic community-acquired cases of diarrhea were significantly associated with hospitalization in the month before onset (odds ratio [OR], 3.4), day care center exposure (OR, 2.0), prior diarrhea in another household member (OR, 4.4), and low family income (OR, 1.8). Breast-feeding infants <6 months old (OR, 0.3) and boiling household drinking water (OR, 0.4) were protective. Enteropathogenic Escherichia coli (EPEC; OR, 12.0) and Salmonella (OR, 7/0, discordant pairs) infections were associated with prior hospitalization, rotavirus infections were associated with day care (OR, 6/0), and breast-feeding was protective against EPEC infections (OR, 0.1). These results suggest that certain preventive strategies can prevent a substantial proportion of cases of diarrheal disease in Brazilian infants.

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