by Pratheek Rebala, Annie Waldman and Brandon Roberts

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The Trump administration has refused to reveal how many workers have left federal health agencies amid a massive purge. Without official figures, ProPublica turned to a federal employee directory to quantify the impact.

Several news outlets — including ProPublica — have used this directory to show who is entering and leaving the federal government, spot political appointments and identify members of the Department of Government Efficiency. According to multiple former and current employees and health agency documents, the HHS employee directory helps workers locate and authenticate their colleagues. HHS did not respond to ProPublica’s questions about why it wouldn’t share data on workforce reductions.

To understand staffing changes over time,........

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