Multistate Mumps Outbreak Originating from Asymptomatic Transmission at a Nebraska Wedding — Six States, August–October 2019

Matthew Donahue, Epidemic Intelligence Service, CDC
Blake Hendrickson, Nebraska Department of Health and Human Services
Derek Julian, University of Nebraska Medical Center
Nicholas Hill, South Dakota Department of Health
Julie Rother, Northeast Nebraska Public Health Department, Wayne, Nebraska
Samir Koirala, University of Nebraska-Lincoln
Joshua L. Clayton, South Dakota Department of Health
Thomas Safranek, Nebraska Department of Health and Human Services
Bryan Buss, Nebraska Department of Health and Human Services

Document Type Article

U.S. government publication; US Department of Health and Human Services/Centers for Disease Control and Prevention

Abstract

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.