Mumps-like symptoms have surfaced in recent days. They include the swelling of salivary glands along with fever, headache, muscle aches, tiredness and loss of appetite.
Officials are trying to determine the possible source of infection.
The health department says mumps is spread by droplets of saliva or mucus, usually when the infected person coughs, sneezes or talks.
The virus can also be spread to those who share items used by the infected person, such as cups.