An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, India

Background: Cholera is an acute diarrhoeal disease caused by consuming contaminated food and water. The burden may remain underreported due to several issues like the low capacity of epidemiological surveillance systems, laboratory testing facilities, and socioeconomic disparities in urban slums. Th...

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Main Authors: Harsh Dilipkumar Shah, Bharat Desai, Pranay Jadav, Nitesh Shah, Rishi Kadikar, Asmita Jyoti Singh
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2022-01-01
Series:Journal of Family Medicine and Primary Care
Subjects:
Online Access:http://www.jfmpc.com/article.asp?issn=2249-4863;year=2022;volume=11;issue=10;spage=6061;epage=6066;aulast=Shah
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author Harsh Dilipkumar Shah
Bharat Desai
Pranay Jadav
Nitesh Shah
Rishi Kadikar
Asmita Jyoti Singh
author_facet Harsh Dilipkumar Shah
Bharat Desai
Pranay Jadav
Nitesh Shah
Rishi Kadikar
Asmita Jyoti Singh
author_sort Harsh Dilipkumar Shah
collection DOAJ
description Background: Cholera is an acute diarrhoeal disease caused by consuming contaminated food and water. The burden may remain underreported due to several issues like the low capacity of epidemiological surveillance systems, laboratory testing facilities, and socioeconomic disparities in urban slums. The disease has very short incubation period resulted in quick clustering of cases. Aim: A thorough outbreak investigation was carried out with the objective of strengthening the surveillance activity, finding out the sources of infection, and recommending necessary actions to control the outbreak immediately. Methods: An unusual increase in cases of diarrhoea was reported in slum area of Kalol town during the first week of July 2021. The stool samples were taken and investigated for confirmation and declaration of the outbreak by the Rapid Response Team. Time, place, and person distribution were carried out to generate a hypothesis and provide an immediate public health response to contain the outbreak. This study was conducted during the emergency public health response, no ethical approval was sought before the survey. Results: The cholera outbreak was confirmed when three out of five stool samples were positive for the bacterium V. cholerae O1 biotype El Tor serotype Ogawa. The overall attack rate and case fatality rate were 3.6% and 1.1%, respectively. The leakages caused the mixing of drainage water with the drinking water supply, which could be the possible cause of outbreak. Conclusion: The early identification and management of the cases, source reduction, health education on water chlorination, and hand hygiene were initiated based on our recommendations, which controlled the present outbreak.
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spelling doaj.art-1bdfe330d4104150a3801e6f085312f82022-12-22T04:41:33ZengWolters Kluwer Medknow PublicationsJournal of Family Medicine and Primary Care2249-48632022-01-0111106061606610.4103/jfmpc.jfmpc_133_22An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, IndiaHarsh Dilipkumar ShahBharat DesaiPranay JadavNitesh ShahRishi KadikarAsmita Jyoti SinghBackground: Cholera is an acute diarrhoeal disease caused by consuming contaminated food and water. The burden may remain underreported due to several issues like the low capacity of epidemiological surveillance systems, laboratory testing facilities, and socioeconomic disparities in urban slums. The disease has very short incubation period resulted in quick clustering of cases. Aim: A thorough outbreak investigation was carried out with the objective of strengthening the surveillance activity, finding out the sources of infection, and recommending necessary actions to control the outbreak immediately. Methods: An unusual increase in cases of diarrhoea was reported in slum area of Kalol town during the first week of July 2021. The stool samples were taken and investigated for confirmation and declaration of the outbreak by the Rapid Response Team. Time, place, and person distribution were carried out to generate a hypothesis and provide an immediate public health response to contain the outbreak. This study was conducted during the emergency public health response, no ethical approval was sought before the survey. Results: The cholera outbreak was confirmed when three out of five stool samples were positive for the bacterium V. cholerae O1 biotype El Tor serotype Ogawa. The overall attack rate and case fatality rate were 3.6% and 1.1%, respectively. The leakages caused the mixing of drainage water with the drinking water supply, which could be the possible cause of outbreak. Conclusion: The early identification and management of the cases, source reduction, health education on water chlorination, and hand hygiene were initiated based on our recommendations, which controlled the present outbreak.http://www.jfmpc.com/article.asp?issn=2249-4863;year=2022;volume=11;issue=10;spage=6061;epage=6066;aulast=Shahcholeraoutbreak investigationpublic health actionsurveillance
spellingShingle Harsh Dilipkumar Shah
Bharat Desai
Pranay Jadav
Nitesh Shah
Rishi Kadikar
Asmita Jyoti Singh
An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, India
Journal of Family Medicine and Primary Care
cholera
outbreak investigation
public health action
surveillance
title An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, India
title_full An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, India
title_fullStr An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, India
title_full_unstemmed An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, India
title_short An epidemiological investigation of a cholera outbreak in peri-urban slum settlements of Gujarat, India
title_sort epidemiological investigation of a cholera outbreak in peri urban slum settlements of gujarat india
topic cholera
outbreak investigation
public health action
surveillance
url http://www.jfmpc.com/article.asp?issn=2249-4863;year=2022;volume=11;issue=10;spage=6061;epage=6066;aulast=Shah
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