What changes were made to CDC datasets in early 2025?

In early 2025, over 200 CDC datasets were removed, with some later restored after terminology changes, and a maternal mortality tracking program was halted.

How did data alterations affect vaccination tracking?

Pauses in vaccination data collection from May to October of the previous year complicated efforts to monitor infectious diseases and assess protection levels.

What is the government's response to altered data?

An HHS spokesperson stated that changes reflect routine data quality and system management decisions, driven by scientific integrity, transparency, and accuracy.

Home / Health / Government Data Disappearing: A Public Health Crisis?

Government Data Disappearing: A Public Health Crisis?

6 Mar

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Summary

Hundreds of CDC datasets altered or removed in early 2025.
Vaccination data pauses complicate infectious disease monitoring.
Environmental data sites also saw significant changes.

Government Data Disappearing: A Public Health Crisis?

Federal data resources are undergoing significant and often undocumented alterations, impacting public health and environmental monitoring. Between January and February 2025, the CDC removed over 200 datasets, with some later reinstated after modifications like changing "gender" to "sex." A critical maternal mortality tracking program was also halted. This lack of transparency undermines confidence in government data, essential for researchers and local health departments.

Further analysis revealed that 49 percent of reviewed CDC, HHS, and VA datasets were substantially changed between January and March 2025, yet only 13 percent noted these modifications. Notably, 87 percent of databases paused from May to October of the previous year were vaccination-related, complicating disease surveillance. Environmental and climate data sites, including Climate.gov, have also faced content removal, mirroring a trend of extensive changes to federal websites.