Indan Journal of Medical Research Indan Journal of Medical Research Indan Journal of Medical Research Indan Journal of Medical Research
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Year : 2017  |  Volume : 146  |  Issue : 3  |  Page : 401-408

Prevalence of Vibrio cholerae O1 serogroup in Assam, India: A hospital-based study

1 Department of Microbiology, Assam Medical College, Dibrugarh, India
2 Departments of Microbiology, Gauhati Medical College, Guwahati, India
3 Department of Microbiology, Fakhruddin Ali Ahmed Medical College, Barpeta, India
4 Departments of Community Medicine, Gauhati Medical College, Guwahati, India

Correspondence Address:
Dr Ajanta Sharma
Department of Microbiology, Gauhati Medical College, Guwahati 781 032, Assam
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijmr.IJMR_631_15

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Background & objectives: Although cholera remains to be an important public health problem, studies on reliable population-based estimates of laboratory confirmed cholera in endemic areas are limited worldwide. The aim of this hospital-based study was to evaluate the prevalence of Vibrio cholerae serogroup in Assam, India, during 2003-2013. Methods: Stool samples/rectal swabs were collected from acute watery diarrhoea (AWD) cases during 2003-2013 and processed by standard microbiological procedures. Antibiotic sensitivity test was done following the Clinical and Laboratory Standards Institute guidelines. Year-wise epidemiological trend of cholera was analyzed. Results: Cholera contributed to 3.93 per cent of AWD cases. In Assam, cholera was found to be more prevalent in the rural areas (6.7%) followed by the tea gardens (5.06%), urban slum (1.9%) and urban areas (1.4%). Highest proportion of cholera (13.7%) was observed in 0-10 yr age group. Of them, 11.5 per cent belonged to 0-5 yr age group. V. cholerae O1 El Tor serotype Ogawa was the predominant isolate. Multiple drug-resistant isolates of V. cholerae O1 Ogawa were reported in the study. Interpretation & conclusions: Emergence of resistance amongst V. cholerae towards many antibiotics is a matter of concern. Hence, continuous surveillance for diarrhoeal disorders is necessary to control the future outbreaks of cholera in this region.

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