Measles had been all but eliminated in the United States, when vaccinations for the disease became available, decades ago. Due to increasing numbers of unvaccinated inhabitants, the disease is back, and spreading throughout the Pacific Northwest.
School districts require measles vaccination, among others. For more information, visit:
Washington County- https://www.co.washington.or.us/hhs/immunizations/school-requirements.cfm, or
Marion County- www.co.marion.or.us/HLT/Pages/Measles.aspx