Polio Dose Conversions
Updates to the WAIIS forecasting tool took place on February 26, 2025. Because of this change, DOH is periodically making conversions to vaccine records in the WAIIS to account for the 04/01/2016 removal of poliovirus type 2 in OPV. Until the forecaster is updated to invalidate doses based on the date given, the following vaccine types will be modified:
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Converted From
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Converted To
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Results
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Impacts
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OPV, trivalent, live, oral given on or after 04/01/2016
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OPV, bivalent
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Converted doses are marked as Invalid
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Patients may need additional doses of IPV to complete series
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OPV, unspecified given before 04/01/2016
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OPV, trivalent, live, oral
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Converted doses are marked Valid
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Polio, unspecified formulation given on or after 04/01/2016
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OPV, bivalent
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Converted doses are marked as Invalid
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Patients may need additional doses of IPV to complete series
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We continue to see polio vaccine records with an administration date on or after 04/01/2016 documented in the WAIIS as ‘Polio, unspecified formulation’. Please use the Polio Vaccine Documentation Quick Reference Guide (PDF) to determine which vaccine type to record.
Questions about these changes can be directed to ImmuneNurses@doh.wa.gov.
MyIR Posters and Flyers
MyIR posters and flyers are now available to order, and shipping is free for a limited time. Orders are limited to 10 posters and/or 100 flyers.
To request a PDF version or to order a higher quantity, email MyIR@doh.wa.gov.
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ISA Renewals
The DOH provider enrollment team is working to renew the Information Sharing Agreements (ISAs) for organizations participating in the WAIIS. Please check your records to ensure your ISAs are up to date as these agreements expire every 3 years. You may lose connectivity to the IIS if no response is received during our review and cleanup of IIS data.
If you are not up to date, click here to renew your agreement or contact pchoiisa@doh.wa.gov for any additional questions.
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IIS Data Quality Tip of the Month
Do you manage vaccine inventory in the WAIIS? The Lot Usage and Recall Report can be a helpful tool to assist with troubleshooting inventory discrepancies. This report can also be used to document compromised vaccines on all patient records that received recalled or compromised lots.
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IIS Training Webinar
Please join us for our upcoming webinar training session on:
Date: December 4, 2025
Time: 11:30am
Topic: IIS Data Quality and the Provider Detail Error Report
- Click here to register for the training session.
This training session will be recorded and posted to our training webpage.
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 2026 Washington State Immunization Summit
Mark your calendars for a full-day hybrid event bringing together public health professionals, health-care providers, community leaders, and advocates dedicated to strengthening immunization efforts across Washington.
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When: Thursday, March 19, 2026
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Where: Greater Tacoma Convention Center (or online!)
Whether you join in person or virtually, you will gain practical tools, new connections, and inspiring insights to advance immunizations through science, technology, and teamwork.
💡 Bonus: In-person attendees enjoy a complimentary lunch and networking reception following the event!
👉 Register now — space is limited! (Link: https://withinreach.my.salesforce-sites.com/default/CnP_PaaS__home?sid=a4KUl000001wAWIMA2&mode=site
WAIIS Training Survey
Click here to submit topics you would like to see covered in future WAIIS training sessions.
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