A recent outbreak of mumps in Macedonia highlights the fact that this country has reported highest rates in this region for much of the past three decades. In the following graph I have included the United States for comparison.

Update: Picked up by ProMED

Steve quoted in ProMED:

Recent outbreaks of mumps in Moldova illustrate the fact mumps rates in this region have been erratic for the past 3 decades, but appear to be declining slowly. See graph.