A measles outbreak in Texas this year became the worst the United States has endured in more than three decades.

Under pressure, the CDC did not proactively reach out to local health authorities. “My staff feels like we are out here all alone,” said one local health director.

As measles surged in Texas early this year, the Trump administration’s actions sowed fear and confusion among Centers for Disease Control and Prevention scientists that kept them from performing the agency’s most critical function — emergency response — when it mattered most, an investigation from KFF Health News shows.

The outbreak soon became the worst the United States has endured in more than three decades.

In the month after Donald Trump took office, his administration interfered with CDC communications,

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