Study finds nearly half of CDC surveillance databases paused in 2025, vaccination systems hit hardest
An audit published in Annals of Internal Medicine reports that 46 percent of 82 routinely updated CDC databases experienced delays or cessations in 2025, with vaccination-related systems making up 87 percent of affected datasets and most blackouts lasting over six months.
- 46 percent of 82 routinely updated CDC databases experienced delays or stopped receiving new data during 2025.
- 87 percent of the affected databases tracked vaccination-related topics.
- Most paused systems had data blackouts lasting more than six months as of October 2025.
- By December 2025 only one of the paused databases identified in the October survey had been updated.
- Study authors suggested the interruptions may be linked to major federal staff and budget reductions and policy changes under the current administration and HHS leadership.
- Experts warned the data gaps could hinder outbreak detection, vaccination coverage monitoring, and public trust in federal health guidance.