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

Journal of Family Medicine and Primary Care
Ankita KankariaRuby Jain

Abstract

During ongoing passive surveillance in Burail, Chandigarh an unexpected rise in number of acute viral hepatitis (AVH) was reported during December 2016. An outbreak of AVH was investigated in an urbanized village, Burail, in Chandigarh, India with an objective of describing its epidemiological features. A house-to-house survey was conducted in Burail (population 51,958). 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. Descriptive analysis was done as per time, person, and place. 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...Continue Reading

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