Note: This webpage is no longer current and is for historical purposes only. See Mumps for the latest information.

2019 Local Mumps Situation

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Mumps is circulating in San Diego County. The number of cases reported in the County in 2019 is the highest in 25 years. An increased number of cases are being reported in 2020.

Neighboring counties have also reported recent increases in mumps cases. Los Angeles County and Orange County noted an increase in mumps cases in 2019.

Nationally, 3,474 mumps cases were reported in 2019 to the Centers for Disease Control and Prevention (CDC). The Mexican Ministry of Health reported 8,085 cases of acute parotitis/mumps in Mexico in 2019, including 900 cases in Baja California. An increased number of these cases continues to be reported in Baja California in 2020, with 138 cases reported through February 8, 2020.

Through March 31, 2020, fifteen mumps cases were reported in San Diego County in 2020. Six cases are linked to an outbreak among students at San Diego State University. In 2019, there were 66 mumps cases reported in San Diego County. Six cases were hospitalized and there were no deaths. Cases ranged in age from 9 months to 79 years (median 28 years) and 40 (61%) are male.

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