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A record 9.7% of kindergartners claimed nonmedical exemptions from Oregon’s school vaccination requirements for the 2024-2025 school year, the highest rate ever recorded in the state, Oregon Health Authority announced today.

The increase continues an upward trend from 8.8% in 2024, when Oregon had the fourth-highest nonmedical exemption rate in the United States, behind Idaho, Alaska and Utah, according to the Centers for Disease Control and Prevention (CDC). National data for the current school year are not yet available.

Data from the Oregon Immunization Program at OHA’s Public Health Division indicates 86.3% of kindergartners were fully vaccinated with all required immunizations for the current school year, down from 86.4% last year, marking three consecutive years of declining vaccination coverage among Oregon’s youngest students. These declining rates raise the risk of outbreaks of vaccine-preventable diseases in schools, particularly in communities with lower immunization coverage.

Stacy de Assis Matthews, school immunization coordinator at the Oregon Immunization Program, stressed the critical role of high vaccination rates in protecting public health.

“An immunized community is our most effective defense against diseases such as measles,” Matthews said. “Robust vaccination coverage not only protects individual children but also safeguards those who cannot be vaccinated due to age, medical conditions, or other vulnerabilities, helping protect our communities in Oregon.”

Paul Cieslak, M.D., medical director for communicable diseases and immunizations at OHA, expressed alarm at the rising exemption rates.

“The increase in nonmedical exemptions weakens community immunity, creating opportunities for outbreaks of serious diseases that vaccines have nearly eradicated,” he said.

Cieslak cited CDC data reporting 1,001 measles cases in the U.S. as of May 8, 2025, with 96% among unvaccinated individuals or those with unknown vaccination status.

Dean Sidelinger, M.D., M.S.Ed., health officer and state epidemiologist at Oregon Public Health, highlighted the importance of sustaining and strengthening public confidence in vaccination programs.

“Vaccines have transformed public health by dramatically reducing the burden of infectious diseases, enabling children to grow up in safe environments,” Sidelinger said. “The growing trend of nonmedical exemptions threatens to undo decades of progress and puts us all at risk. OHA is committed to providing accessible, science-based information to empower families to choose vaccination.”

Despite the rise in exemptions, Matthews emphasized that the vast majority of Oregon families continue to get childhood immunizations. For students across all grades, from kindergarten through 12th grade, 90.4% were fully vaccinated in 2025.

“Parents and guardians recognize the essential role vaccines play in keeping schools and communities free from diseases like measles, polio, and pertussis,” she said. Oregon’s immunization laws help protect more than 650,000 students in schools and child care programs. “Every child’s immunization record is checked yearly, helping ensure equitable vaccine access for all Oregon children.”

Updated kindergarten immunization and exemption rates for the 2024-2025 school year are available at Oregon Immunization Coverage. Spreadsheets detailing immunization rates for individual schools and child care facilities are also accessible, with 2025 updates to interactive maps forthcoming.

Vaccination resources for families:

Information on immunization requirements in 17 languages can be found on the OHA website.
Families seeking vaccines can contact 211 or their local health department. 211Info offers support in English and Spanish, with interpreter services in multiple languages.
The Vaccines for Children program provides low- or no-cost immunizations for children ages 0-18 who are enrolled in Oregon Health Plan, uninsured, and/or American Indian/Alaska Native.

Increasing awareness and education about primary prevention, public health risks and preventive health services are among actions OHA is taking as part of its 2024-2027 Strategic Plan. The plan further supports expanding access to vaccines and other health resources for children, parents and families in all communities in Oregon.

Source: Oregon Health Authority

Mark Mason