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Article Publish Status: FREE
Abstract Title:

Epidemic of mumps among vaccinated persons, The Netherlands, 2009-2012.

Abstract Source:

Emerg Infect Dis. 2014 Apr ;20(4):643-8. PMID: 24655811

Abstract Author(s):

Jussi Sane, Sigrid Gouma, Marion Koopmans, Hester de Melker, Corien Swaan, Rob van Binnendijk, Susan Hahné

Article Affiliation:

Jussi Sane

Abstract:

To analyze the epidemiology of a nationwide mumps epidemic in the Netherlands, we reviewed 1,557 notified mumps cases in persons who had disease onset during September 1, 2009-August 31, 2012. Seasonality peaked in spring and autumn. Most case-patients were males (59%), 18-25 years of age (67.9%), and vaccinated twice with measles-mumps-rubella vaccine (67.7%). Nearly half (46.6%) of cases occurred in university students or in persons with student contacts. Receipt of 2 doses of vaccine reduced the risk for orchitis, the most frequently reported complication (vaccine effectiveness [VE] 74%, 95% CI 57%-85%); complications overall (VE 76%, 95% CI 61%-86%); and hospitalization (VE 82%, 95% CI 53%-93%). Over time, the age distribution of case-patients changed, and proportionally more cases were reported from nonuniversity cities (p<0.001). Changes in age and geographic distribution over time may reflect increased immunity among students resulting from intense exposure to circulating mumps virus.

Study Type : Human Study
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