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Oregon immunization rates measure vaccination levels among two-year-olds in a given year. Rates are based on ALERT Immunization Information System (IIS) data for all two-year-olds with an Oregon address and a post-birth immunization record. In the past, rates were adjusted based on estimates of missing data but we have discontinued that process because the system is so well populated. Over 95% of all childhood immunizations given in Oregon since 1999 are in ALERT and reporting levels are even higher in recent years. For more information, please see our
Oregon two-year-old immunization rates are now available for 2021. Vaccination rates for two-year-olds held steady at 71% for the 4:3:1:3:3:1:4 series assessed as of December 31, 2021 and have remained at that level since 2019. Rates for the seven individual vaccines were unchanged or decreased by less than 3 percentage points since 2019. Future cohorts born during the COVID-19 pandemic may show more significant impact due to COVID-19 healthcare interruptions.
Up-to-date vaccination rates for the 4:3:1:3:3:1:4 series are also provided according to race and ethnicity. Please review the
ALERT IIS Race and Ethnicity Data Use document for help in interpreting the rates.
Select a county below to view a PDF file containing the county's rates, or
view all of Oregon's statewide immunization rates (pdf).
Interested in seeing your county's rates by zip code? Call the Oregon Immunization Program (971-673-0300) to make a request.
Completion Rates by county for the 4:3:1:3:3:1:4 series.
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