Document Detail

Cholera outbreak secondary to contaminated pipe water in an urban area, West Bengal, India, 2006.
MedLine Citation:
PMID:  19696991     Owner:  NLM     Status:  MEDLINE    
Outbreaks of cholera are common in West Bengal. In April 2006, Garulia municipality reported a cluster of diarrhea cases. We investigated this cluster to identify the etiological agent, source of transmission and propose control measures. We defined a case of diarrhea as occurrence of > or =3 loose/watery stools a day among the residents of Garulia since April 2006. We searched for cases of diarrhea in health care facilities and health camp. We conducted a gender- and age-matched case-control study to identify risk factors. We inspected the sanitation and water supply system. We collected rectal swabs from diarrhea patients and water specimens from the affected areas for laboratory investigation. Two hundred and ninety-eight cases of diarrhea were reported to various health care facilities (attack rate: 3.5/1000, no deaths). The attack rate was highest among children (6.4/1000). Vibrio cholerae El Tor O1 Inaba was isolated from two of 7 rectal swabs. The outbreak started on 10 April 2006, peaked on 26 April and lasted till 6 May. Cases clustered in an area distal to leaking water pipelines. Drinking municipal water exclusively was significantly associated with the illness (OR 13, 95% CI=6.5-27). Eight of the 12 water specimens from the affected area had fecal contamination and poor chlorine content. This outbreak was due to a contaminated municipal piped water supply and V. cholera 01 Inaba was possibly the causative organism.
Rama Bhunia; Ramachandran Ramakrishnan; Yvan Hutin; Mohan D Gupte
Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2009-08-21
Journal Detail:
Title:  Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology     Volume:  28     ISSN:  0975-0711     ISO Abbreviation:  Indian J Gastroenterol     Publication Date:    2009 Mar-Apr
Date Detail:
Created Date:  2009-08-21     Completed Date:  2010-03-04     Revised Date:  2010-06-16    
Medline Journal Info:
Nlm Unique ID:  8409436     Medline TA:  Indian J Gastroenterol     Country:  India    
Other Details:
Languages:  eng     Pagination:  62-4     Citation Subset:  IM    
National Institute of Epidemiology, Indian Council of Medical Research , Chennai, Tamil Nadu, India.
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MeSH Terms
Cholera / epidemiology*,  microbiology
Disease Outbreaks*
India / epidemiology
Middle Aged
Retrospective Studies
Urban Population*
Vibrio cholerae O1 / isolation & purification*
Water Microbiology*
Water Supply / analysis*

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