Impact of Ramadan on Clinical and Microbiologic Parameters of Patients Seen at a Diarrheal Hospital in Urban Dhaka, Bangladesh, 1996–2012

Daniel T. Leung Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh; Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts; Centre for Nutrition and Food Security, Dhaka, Bangladesh; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts

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Sumon K. Das Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh; Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts; Centre for Nutrition and Food Security, Dhaka, Bangladesh; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts

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M. A. Malek Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh; Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts; Centre for Nutrition and Food Security, Dhaka, Bangladesh; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts

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Firdausi Qadri Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh; Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts; Centre for Nutrition and Food Security, Dhaka, Bangladesh; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts

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A. S. G. Faruque Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh; Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts; Centre for Nutrition and Food Security, Dhaka, Bangladesh; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts

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Edward T. Ryan Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh; Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts; Centre for Nutrition and Food Security, Dhaka, Bangladesh; Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts

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Ramadan is a month in the Islamic calendar when Muslims fast during daylight hours. We used data from the surveillance system of the International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka Hospital in Dhaka, Bangladesh, a predominantly Muslim country, to compare the etiology and clinical presentation of patients who presented with diarrhea during Ramadan to that of control periods, defined as the 30 days immediately before Ramadan. The proportion of infecting pathogens was largely the same, although Shigella spp. were less likely to be identified during Ramadan. Clinical presentations during Ramadan among adult Muslim diarrheal patients were also comparable to those admitted during control periods. A subgroup of cholera patients who presented after sunset during Ramadan had a shorter duration of diarrhea and higher prevalence of severe thirst, drowsiness, and severe dehydration. Our findings suggest that Ramadan has few effects on the profile of enteric pathogens and clinical features of adults seeking medical care for diarrhea.

Author Notes

* Address correspondence to Daniel T. Leung, Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, GPO Box 128, Dhaka 1000, Bangladesh. E-mail: dleung@icddrb.org

Financial support: This study was supported by the International Centre for Diarrhoeal Disease Research and its donors, which provide unrestricted support for its operations and research. Current donors providing unrestricted support include the Australian Agency for International Development, the Government of the People's Republic of Bangladesh, the Canadian International Development Agency, the Swedish International Development Cooperation Agency, and the Department for International Development, United Kingdom. This study was also supported by grants from the National Institutes of Health, including National Institute of Allergy and Infectious Diseases grants AI100023, AI106878, AI077883, AI058935 (Edward T. Ryan), AI100923 (Daniel T. Leung), a Thrasher Research Fund Early Career Award (Daniel T. Leung), and a Postdoctoral Fellowship in Tropical Infectious Diseases from the American Society of Tropical Medicine and Hygiene/Burroughs Wellcome Fund (to Daniel T. Leung).

Authors' addresses: Daniel T. Leung and Firdausi Qadri, Centre for Vaccine Sciences, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh, E-mails: dleung@icddrb.org and fqadri@icddrb.org. Sumon K. Das, M. A. Malek, and A. S. G. Faraque, Centre for Nutrition and Food Security, International Centre for Diarrhoeal Disease Research, Bangladesh, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh, E-mails: sumon@icddrb.org, mamalek@icddrb.org, and gfaruque@icddrb.org. Edward T. Ryan, Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, E-mail: etryan@mgh.harvard.edu.

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