Students in Josephine County have the lowest school vaccination rates in Oregon, according to new data from the Oregon Health Authority.Only 80% of the county’s K-12 students were up to date on all required vaccinations during the 2025-26 school year, compared with a statewide average of 90%.Josephine County also had the state’s highest rate of nonmedical exemptions from at least one required school vaccination. Nearly 20% of students had an exe…