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Many CDC databases are not being updated, most related to vaccines, study finds

By NBC News  
   January 27, 2026

Nearly half of the databases that the CDC used to update regularly — surveillance systems that tracked public health information like COVID vaccination rates and hospitalizations for respiratory syncytial virus — have been paused without explanation, according to new research. The findings, published Monday in the journal Annals of Internal Medicine, indicate that at the start of 2025, the CDC maintained 82 databases that were updated at least monthly. But by the end of October, the study found, 38 had gone stale, with 34 showing no new entries at all in the previous six months. 

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