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Three UW-Madison students have been diagnosed with mumps in cases that don’t seem connected, the university announced Thursday.

With an ongoing outbreak of nearly 100 cases at Ohio State University, “I expect we’re going to see more cases,” said Craig Roberts, an epidemiologist at UW-Madison’s University Health Services.

Roberts said students and others in the Madison area should wash their hands regularly, stay home if ill and be sure they’ve had two doses of the measles-mumps-rubella vaccine. There are no medications to treat mumps, a viral illness that can cause fever, headache, muscle aches, fatigue and swelling of the cheek and jaw area.

The UW-Madison students with mumps each received two doses of the vaccine as children, Roberts said. The virus circulating today could be different from what the vaccine was based on or the shots might not have worked well in the students, he said.

The Centers for Disease Control and Prevention says two doses of the MMR vaccine is 88 percent effective against the mumps.

Mumps is spread person to person through the air or by direct contact with saliva or infected droplets. Symptoms typically begin 16 to 18 days after infection.