What causes mumps?
Mumps is caused by a virus that is spread by infected saliva. This means the virus can spread very much like the common cold. For example, if an infected person sneezes near you or you touch something that an infected person has touched, and you have not been vaccinated, you may get the mumps. Normally, you won’t get sick until 12 to 24 days after being exposed to the virus. These 12 to 24 days are called the incubation period.
Written by familydoctor.org editorial staff