Pauses in data collection and staff cuts have affected many CDC databases.

(ANN ARBOR, MI) Public health relies on data – whether it is tracking the effectiveness of a given year’s flu vaccine, monitoring blood lead levels around the country or estimating the prevalence of diabetes. This data forms the basis for decisions such as whether a community should expand screening for diabetes and which communities are at greatest risk of severe flu-related illnesses.

But in January 2025, at the beginning of President Donald Trump’s second term, webpages and data from the Centers for Disease Control and Prevention – and from many other federal agencies – began to disappear. In total, at least 200 CDC datasets and more than 8,000 webpages from across the government were taken down.

Originally published on theconversation.com, part of the BLOX Digital Content Exchange.

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