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Year : 2020  |  Volume : 9  |  Issue : 4  |  Page : 1856-1867

Epidemiological investigation of an outbreak of Acute Viral Hepatitis A and E in a semi-urban locality in Chandigarh, North Indian Union Territory, 2016–17

1 Department of Community Medicine and Family Medicine, All India Institute of Medical Sciences, Bathinda, Punjab, India
2 Department of Community Medicine and School of Public Health, Postgraduate Institute of Medical Education and Research, Mullana, Haryana, India
3 Department of Community Medicine, MM Institute of Medical Sciences and Research, MM Deemed University, Mullana, Haryana, India
4 Department of Community Medicine, Dr Yashwant Singh Parmar, Government Medical College, Nahan, Himachal Pradesh, India
5 Senior Medical Officer, Civil Hospital, Sector 45, Manimajra, Chandigarh, India
6 Integrated Disease Surveillance Project Lab, Civil Hospital, Manimajra, Chandigarh, India

Correspondence Address:
Dr. Madhu Gupta
Department of Community Medicine and School of Public Health, Postgraduate Institute of Medical Education and Research, Chandigarh - 160 012
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jfmpc.jfmpc_1244_19

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Context: During ongoing passive surveillance in Burail, Chandigarh an unexpected rise in number of acute viral hepatitis (AVH) was reported during December 2016. Aims: An outbreak of AVH was investigated in an urbanized village, Burail, in Chandigarh, India with an objective of describing its epidemiological features. Settings and Design: A house-to-house survey was conducted in Burail (population 51,958). Subjects and Methods: WHO's standard case definition for AVH was used to identify cases. Suspected cases were tested for hepatitis A virus (HAV) and E virus (HEV) using enzyme-linked immunosorbent assay. Drinking water samples were tested for fecal contamination. Control measures were implemented to contain the outbreak. Statistical Analysis Used: Descriptive analysis was done as per time, person, and place. Results: Out of 141 confirmed cases of AVH, 85.1% were positive for HEV, 12.8% for HAV, and 2.1% for both HAV and HEV. The attack rate was 27.1 per 10,000 in a population. Males were affected more than females (P < 0.05). One of the areas reported a leakage in drinking water pipeline and had highest attack rate (36.8/10000 population). Drinking water samples were found negative for contamination. Around 27% of confirmed cases reported history of taking food from local vendors in Burail 2–6 weeks prior to the onset of symptoms. Conclusion: This study described the epidemiological features of dual hepatitis outbreak due to HAV and HEV from Chandigarh, Union Territory, north India.

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