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DALLAS (CBSDFW.COM) – The Dallas County Department of Health and Human Services has confirmed one case of mumps and an additional three associated probable mumps cases have been reported in four adults in Dallas.

The exposure to mumps likely occurred during a Halloween party on October 29 in the 75219 zip code.

Symptoms have included fever and parotitis or orchitis, with onset of illness for most cases between November 16 to 18 according to the DCHHS news release.

Mumps is transmitted by direct contact with respiratory droplets or saliva, with a usual incubation period of 16 to 18 days (range 12 to 25 days) after exposure.

Acute parotitis lasting for more than two days is a typical manifestation of mumps, and occurs in more than 30 percent of infected persons.

Parotitis is an inflammation of one or both parotid glands, the major salivary glands located on either side of the face.

Complications of mumps can include deafness, orchitis, oophoritis, pancreatitis and meningoencephalitis.

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