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Mumps resurgence likely due to waning vaccine-derived immunity
A resurgence of mumps in the US among vaccinated young adults appears to be due to waning of vaccine-induced immunity, according to a recent analysis. Researchers found vaccine-derived immune protection against mumps lasts about 27 years after the last dose. The findings suggest that, in addition to the currently recommended two doses of mumps vaccine in childhood, a third dose at age 18 may help sustain protection.