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. 2019 Mar;91(3):347-350.
doi: 10.1002/jmv.25324. Epub 2018 Oct 31.

Mumps outbreak investigation in Jaisalmer, Rajasthan, India, June-September 2016

Chandrakant S Moghe  1 , Pramod Goel  1 , Jalam Singh  2 , Naina Ram Nayak  2 , Meera Dhuria  1 , Ruchi Jain  3 , Rajesh Yadav  4 , Ekta Saroha  4 , Samir V Sodha  4 , C S Aggarwal  1 , Srinivas Venkatesh  1
Affiliations

Mumps outbreak investigation in Jaisalmer, Rajasthan, India, June-September 2016

Chandrakant S Moghe et al. J Med Virol. 2019 Mar.

Abstract

Mumps, a vaccine-preventable disease, cause inflammation of salivary glands and may cause severe complications, such as encephalitis, meningitis, deafness, and orchitis/oophoritis. In India, mumps vaccine is not included in the universal immunization program and during 2009 to 2014, 72 outbreaks with greater than 1500 cases were reported. In August 2016, a suspected mumps outbreak was reported in Jaisalmer block, Rajasthan. We investigated to confirm the etiology, describe the epidemiology, and recommend prevention and control measures. We defined a case as swelling in the parotid region in a Jaisalmer block resident between 23 June 2016 and 10 September 2016. We searched for cases in health facilities and house-to-house in affected villages and hamlets. We tested blood samples of cases for mumps immunoglobulin M (IgM) enzyme-linked immunosorbent assay (ELISA). We found 162 cases (60% males) with a median age of 9.4 years (range: 7 month-38 years) and 65 (40%) were females. Symptoms included fever (70%) and bilateral swelling in neck (65%). None of them were vaccinated against mumps. Most (84%) cases were school-going children (3-16 years old). The overall attack rate was 2%. Village A, with two hamlets, had the highest attack rate (hamlet 1 = 13% and hamlet 2 = 12%). School A of village A, hamlet 1, which accommodated 200 children in two classrooms, had an attack rate of 55%. Of 18 blood samples from cases, 11 tested positive for mumps IgM ELISA. This was a confirmed mumps outbreak in Jaisalmer block that disproportionately affected school-going children. We recommended continued surveillance, 5-day absence from school, and vaccination.

Keywords: mumps; outbreak; surveillance; vaccination.

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Conflict of interest statement

CONFLICTS OF INTEREST

The authors declare that they have no conflicts of interest.

Figures

FIGURE 1
FIGURE 1
Mumps cases by date of illness onset, block Jaisalmer, district Jaisalmer, Rajasthan, India, 23 June 2016 to 10 September 2016 (N = 162)
See this image and copyright information in PMC

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