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Mumps is an infectious disease caused by a virus. Mumps starts with a fever, headache, muscle aches, tiredness, loss of appetite, and swelling of the salivary glands. It is a common illness in children and young adults. Mumps can be prevented with vaccination.

Mumps is not very common in the US any longer. From year to year, mumps cases can range from roughly a couple hundred to a couple thousand. For example in 2010, there were 2,612 cases, and in 2012, there were 229. Before the US mumps vaccination program started in 1967, about 186,000 cases were reported each year. There has been more than 99% decrease in mumps cases in the US since the pre-vaccine era.

  • Symptoms
  • Transmission
  • Prevention


  • Fever
  • Headache
  • Muscle aches
  • Tiredness
  • Loss of appetite
  • Swollen and sensitive salivary glands under the ears or jaw on either one or both sides of the face called parotitis


  • Swelling of the tissue covering the brain and spinal cord (meningitis)
  • Swelling of the ovaries called Oophoritis
  • Swelling of the testicles called Orchitis
  • Swelling of the cheeks and jaw, due to the swelling of the salivary glands
  • Deafness
  • Swelling of the brain (encephalitis)
  • Swelling of the breasts (mastitis)


  • When an infected person coughs, laughs, sneezes, or talks the droplets of saliva or mucus from the mouth, nose, or throat can spread the virus
  • Items and objects used or touched by an infected person can be contaminated with the virus

Things to do to help prevent the spread of mumps:

  • Washing hands well with soap
  • Do not share eating or drinking utensils
  • Items touched frequently must be cleaned with soap and water or disinfecting wipes

Mumps Vaccination

The measles, mumps, rubella (MMR) vaccine is the best way to prevent mumps. The vaccine is included in the combination measles-mumps-rubella (MMR) and measles-mumps-rubella-varicella (MMRV) vaccines. Two (2) doses of MMR vaccine are recommended to prevent the disease. The first dose should be given at 12 to 15 months of age and the second dose should be given at 4 to 6 years of age.

Possible Vaccine Side Effects

  • Irritations in the arm
  • Fever
  • Swollen glands
  • Slight red rash
Mumps Surveillance Summary

June 2018

State mumps activity:

Map 4: This map shows the cumulative mumps incidence rates per 100,000 population. Counties with one or more cases reported in June are: Duval, Pasco, Pinellas, and Palm Beach. Counties with an incidence rate of 0.1-0.1 per 100,000 population are: Duval and Palm Beach. Counties with an incidence rate of 0.2-0.4 per 100,000 population are: Pasco, Pinellas, Polk, and Miami-Dade. Counties with an incidence rate of 0.5-1.1 per 100,000 population are: Santa Rosa, Osceloa, Martin, and Broward. Figure 18: The figure shows the number of confirmed and probable cases of mumps reported into Merlin from 2013 to May 2018. 0 confirmed cases and 1 probable case in 2013. 0 confirmed cases and 1 probable case in 2014. 3 confirmed cases and 7 probable cases in 2015. 6 confirmed cases and 10 probable cases in 2016. 24 confirmed cases and 50 probable cases in 2017. 17 confirmed cases and 19 probable cases in 2018 to date.
  • Five mumps cases were reported among four counties in June.
  • Mumps cases have been elevated since April 2017 with a peak of 20 cases reported in August 2017; trends for 2018 will continue to be monitored closely.
  • From January 1, 2018 through June 30, 2018, 36 cases of mumps were reported among ten of Florida’s 67 counties.
  • In Florida, the number of reported mumps cases has remained relatively low over the past five years but has steadily increased since 2015 (10 cases), with a large spike in
    2017 (70 cases). The last time the number of reported cases reached 2017 levels was in the 1990s.
  • No outbreaks of mumps were reported in June.
    • In 2017, the majority of mumps cases were associated with outbreaks or household clusters.
    • While mumps outbreaks can occur in highly-vaccinated communities, high vaccination coverage limits the size, duration, and spread of outbreaks.
  • In June, the highest incidence of mumps was in children age 6-11 years old.
  • Vaccination is the best way to prevent mumps infections. In June, 20% of cases were not up-to-date on their mumps vaccinations.
  • In recent months, cases not up to date on mumps vaccinations were more likely to visit the emergency department and require inpatient hospitalization. In general, those who have received at least one mumps vaccination even if they later develop disease suffer less severe outcomes than those who have never been vaccinated.
  • To learn more about other, please visit:

National mumps activity:

  • Since 1989 when the two dose vaccination program was introduced, the number of mumps cases has fluctuated from a few hundred to a few thousand per year. Some years had higher numbers of cases than others mainly because of several large outbreaks in close-contact settings.
  • In 2016, there were over 6,000 cases of mumps reported, and in 2017 there were over 5,600 cases reported. Since 2013, the 18-22 year age group has had the highest incidence of mumps, largely driven by outbreaks and waning immunity among this age group. About half of the outbreaks reported since 2016 have been associated with colleges and universities, primarily affecting young adults.
  • The Advisory Committee on Immunization Practices recently recommended a third mumps virus-containing vaccine for certain populations identified by public health authorities as being at increased risk of mumps because of an outbreak. To learn more, please visit

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