AUGUSTA (AP) – Maine health officials are issuing new vaccination recommendations for mumps after the state’s first outbreak since the 1980s.

There have been seven confirmed cases since September and another one to two dozen possible cases, the Maine Center for Disease Control and Prevention said Monday.

Public Health Director Dr. Dora Anne Mills issued an advisory to K-12 schools, colleges and universities, and hospitals asking them to review and update mumps vaccine records for students and employees.

The new recommendations could result in some hospital workers and university students having to get additional mumps vaccines, Mills said. In K-12 schools, students who have not been vaccinated will have to be excluded from school for 18 days if their school experiences an outbreak.

Mumps is a viral infection whose symptoms include fever, headaches, muscle ache and swelling of the salivary glands.

Since March, more than 900 cases have been confirmed in Canada. Most cases have occurred in people ages 17-37, many of whom are college students.

It’s thought that there haven’t been any cases in Maine since the 1980s, Mills said.

In Maine, patients have ranged in age from the late teens to the late 50s.

Cases have been confirmed in Cumberland, Androscoggin, Oxford and Somerset counties.

At one time it was common in the U.S., affecting some 200,000 people a year, but the number of cases plunged in 1967 with the introduction of the measles mump rubella vaccine, Mills said.