Revision History

The United States has recorded over 3,500 confirmed measles cases since January 2025 — the worst resurgence in over three decades — driven by declining vaccination rates, federal policy shifts that reduced recommended childhood vaccines, and eroding public trust in health institutions. Pandemic researchers warn the crisis is not merely a measles story but a stress test for the nation's disease-response infrastructure, exposing vulnerabilities that could prove catastrophic when the next novel pathogen emerges.