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The El Paso

One US measles outbreak is proving particularly deadly. Here’s why

By Deidre McPhillips, CNN (CNN) — An ongoing measles outbreak in Pennsylvania has quickly become the largest and deadliest in the United States in more than 30 years. Historical data suggests that 1 to 3 people will die out of every 1,000 unvaccinated people who contract measles. But Pennsylvania...

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