"Measles is a bellwether," said James Alwine, emeritus professor at the University of Pennsylvania, a virologist, and a member of the coordinating committee of Defend Public Health. "It means that your vaccination level is so low that all the other vaccine-preventable diseases will come up with time."…
https://www.theguardian.com/society/2026/jan/21/measles-outbreak-new-cases-us?

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