Impact of the COVID-19 pandemic on routine childhood vaccination in 9 U.S. jurisdictions.

Importance: Routine vaccinations are key to prevent outbreaks of vaccine-preventable diseases. However, there have been documented declines in routine childhood vaccinations in the U.S.

Missed opportunities for human papillomavirus vaccination using Iowa's Immunization Registry Information System.

Purpose: Adolescent human papillomavirus (HPV) vaccination rates continue to remain lower than other adolescent vaccines, both nationwide and in Iowa. This study examined predictors of missed opportunities for first-dose HPV vaccine administrations in Iowa in order to conduct more targeted outreach and improve adolescent HPV vaccine uptake.

Methods: A retrospective study was conducted to identify predictors of missed opportunities for first-dose HPV vaccination in Iowa adolescents using Iowa's Immunization Registry Information System.

Tri-State Evaluation of the Effects of the COVID-19 Pandemic on Routine Vaccine Uptake in Iowa, Minnesota, and North Dakota, 2017-2021.

The objective of this analysis was to evaluate and compare the effects of the COVID-19 pandemic on routine and annual influenza vaccination in Iowa, Minnesota, and North Dakota. Routine and annual influenza vaccination uptake and coverage between 2017 and 2021 was collected from each state's immunization information system (IIS) by age group and stratified by provider and vaccine type. Data from 2017 to 2019 were averaged to obtain a pre-pandemic baseline and compared to 2020 and 2021 data.

Benefits and Challenges of Sealing Deceased Individual Immunization Records in Immunization Information Systems (IIS): An Overview of Iowa's Process.

Data cleansing practices aimed to improve data quality in immunization information systems (IIS) continue to be identified and evaluated by immunization programs to generate accurate and reliable immunization coverage rates. The Iowa Immunization Program has implemented several automated, daily data cleansing practices to improve the quality of records in Iowa's Immunization Registry Information System (IRIS), including the process of sealing records of deceased individuals through vital records matching. This process removes deceased individual records from the active IIS population, which helps reduce denominator inflation and improve the accuracy of immunization rate calculations.