(Portland, OR)  --  Recent outbreaks of the measles in the Pacific Northwest led to a pop-up vaccination clinic over the weekend in Multnomah County.  Wednesday is the last day kids missing vaccinations can get them done in order to stay in class for the remainder of the school year.  If parents have a medical or personal reason for not getting them, they have to have signed paperwork on file by then.  Another pop-up clinic in Multnomah County is set for Wednesday.