An outbreak of mumps with genetic strain variation in a highly vaccinated student population in Scotland.

Mumps has mutated and a NEW strain is now affecting vaccinated people.

Vaccination status was available for 278 cases of whom 84% had received at least one dose of mumps containing vaccine and 62% had received two.

This outbreak was genetically different from the previously circulating virus.

Source: Epidemiol Infect. 2017 Nov;145(15):3219-3225. doi: 10.1017/S0950268817002102. Epub 2017 Sep 14.

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