Even small drops in vaccination rates for US children can lead to disease outbreaks

More than three-quarters of U.S. counties and jurisdictions are experiencing declines in childhood vaccination rates, a trend that began in 2019, according to a September 2025 NBC News–Stanford University investigation. The report also found a “large swath” of the U.S. no longer has the “basic, ground-level immunity” needed to stop the spread of measles.

This article was originally published on MedicalXpress.com

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