Date of this Version
Morbidity and Mortality Weekly Report, June 5, 2020 / Vol. 69 / No. 22
In August 2019, 30 attendees at a Nebraska wedding developed mumps after being exposed to one asymptomatic index patient who was fully vaccinated according to Advisory Committee on Immunization Practices (ACIP) recommendations (1), resulting in a multistate outbreak. A public health investigation and response revealed epidemiologic links that extended from the index patient through secondary, tertiary, and quaternary patients and culminated in a measles-mumpsrubella (MMR) booster vaccination campaign in the local community where approximately half of the patients resided.