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Elimination of measles in the United States in 2000 was a landmark public health achievement. Twenty-five years later, the country has already reported more cases this year than it did in all of 2025, a stark reminder that public health victories can be reversed.
In mid-August, colleagues and I will review the evidence and decide whether the U.S. has maintained measles elimination. In many ways, our roles bookend that history. Several of these colleagues helped lead the national effort that ended endemic measles transmission in 2000. And I now chair the committee that must determine whether that hard‑won status still holds — or whether the country is on the verge of losing it.

