What’s causing measles outbreaks? Experts point to vaccination decline, waning herd immunity

January 23, 2024

Measles was officially declared eradicated in the U.S. more than 20 years ago, but new outbreaks of the disease are popping up — and experts say declining vaccination rates are jeopardizing herd immunity and increasing the risk.

In Philadelphia, nine cases were reported after a cluster started in a hospital and spread to other medical facilities and a day care center. Measles is a highly contagious and potentially deadly virus that causes a tell-tale rash.

Read more at CBS.

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