Using the latest data from Vaccine Track, the team generates quarterly analyses to uncover top US adult immunization trends, which could help to reveal how policy or social forces might be driving those trends.
Latest Insights
Adult vaccine demand is getting harder to predict
June 2026
National adult vaccine claims rose meaningfully over the past decade, but that growth trend tells only part of the story. Across adult vaccines, demand is increasingly shaped by recommendation changes, launch dynamics, and uneven state-level execution. While overall volume rose between 2015 and 2025, performance varied sharply across states—from strong gains in markets like Washington and Montana, to flat or declining growth across parts of the South and Midwest—showing that the market is expanding but not equitably.
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Pneumococcal Drives Adult Vaccination Trends into Q3 2025
April 2026
Compared to third quarter of 2024, adult vaccination claims were up 6% in Q3 2025. This general upward trend was observed across points of access and races/ethnicities, though claims declined for all insurance coverage types except commercial.
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Expanded Recommendation and Local Action Parallel Upward Trends in 1H 2025
December 2025
Data show nationwide increase (15%) in the first half of 2025 compared to 2024 with the biggest gains among adults 50–64, likely driven by expanded pneumococcal recommendations
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Local Trends Reveal Opportunities and Challenges in Adult Vaccination in Q1 2025
October 2025
Although adult immunization increased in most metro areas compared to Q1 2024, wide variation points to remaining gaps
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Potential Shift Toward Year-Round Vaccination
December 2024
National claims data reveal smaller seasonal swings in the post-pandemic period compared to the years before and during the pandemic
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A Full Year Without Cost Sharing for Vaccinations Under Medicare
June 2024
Looking at the full year of 2023 shows a broad upward trend in adult vaccinations compared to the years immediately following the pandemic
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National Trends Show Continued Increase in Adult Vaccination Through First Half of 2023
December 2023
Data from the first half of 2023 continue to show an upward trend in adult vaccinations
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