Mumps outbreak in a tribal population from the Union Territory of Dadra and Nagar Haveli, India

Abstract

A cluster of parotitis cases (n = 13) were observed in a tribal population of Vansda village from the Union Territory of Dadra and Nagar Haveli, India between 20th and 22nd week of 2016. Primary information was received by the local Infectious Disease Surveillance Program team, and subsequently field investigations were carried out in the affected area. Active surveillance was conducted till twice the incubation period from onset of the last surveyed case. For the laboratory investigations, 19 serum samples were collected from 11-suspected cases and their close contacts (n = 8). All samples were transported within 12 h on icepacks to the main laboratory at Pune. Majority of the suspected mumps cases were children except four adults. Mumps infection was confirmed in 8 of 11 suspected cases with post-onset ranging from 28 to 43 days and none from the close contacts. Both mumps specific IgM and IgG antibodies were detected in nine cases (including one equivocal) and single contact (equivocal result). Overall, ten cases and eight contacts (including one equivocal) showed mumps specific IgG antibodies. Present investigation provides information about the characteristics of mumps outbreak in a tribal community that resides in the remote areas. In addition, introduction of mumps containing vaccine in the tribal population may have added advantages in the tribal health program.

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

“…However, the outbreak was limited to five villages; their location in the Thar desert of Jaisalmer with large distances between villages likely played a role in limiting the geographic spread of the outbreak. This outbreak affected a considerable proportion of adults, which is typical in a population that is unimmunized . Low prevalence of complications is similar to what has been reported in other studies and investigations …”

“…This outbreak affected a considerable proportion of adults, which is typical in a population that is unimmunized . Low prevalence of complications is similar to what has been reported in other studies and investigations …”

“…These practices in a unvaccinated population limited the spread and associated complications, however, the epidemic took its natural course and ended. The epidemiology of this outbreak is similar to that of recent outbreaks reported in tribal villages of neighboring Dadra and Nagar Haveli, Maharashtra, and Karnataka …”

“…India may want to consider mumps as a notifiable disease and include it in routine surveillance under IDSP to estimate disease burden . This recommendation is consistent with the recommendations of other researchers in India . More outbreaks need to be investigated to understand the epidemiology of mumps in India and to guide future vaccination policy.…”

Outbreak of mumps virus genotype G infection in tribal individuals during 2016–17 in India

“…Similarly, very scanty information is available on the epidemiology of mumps, its incidence and antibody prevalence in India . A cluster of mumps cases in tribal individuals from DNH was recently investigated . However, the circulating mumps virus genotype was not determined because of lack of appropriate throat swabs or urine specimens, whereas in the present study two mumps viruses were isolated and a full genome sequence of circulating mumps virus (genotype G) determined.…”