outbreak outbreak

A man shops for vegetables near romaine lettuce for sale at a supermarket in California, where the first death from the E. coli outbreak was reported. Frederic J. Brown/AFP/Getty Images hide caption

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Frederic J. Brown/AFP/Getty Images

This bacterium is the cause of the mystery illness in Liberia. We don't want to give it away ... so you'll have to read the story to find out what it is. BSIP/UIG/Getty Images hide caption

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BSIP/UIG/Getty Images

When A Mystery Outbreak Strikes, Who You Gonna Call?

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Hilary Fung/NPR

Yellow Fever Encroaches Megacities, Straining Global Vaccine Supply

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Scientists say low chlorine levels in Flint's water system during the city's water crisis in 2014 and 2015 led the bacterium Legionella pneumophila to proliferate, causing a deadly outbreak of Legionnaire's disease. Science Source hide caption

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Science Source

Lethal Pneumonia Outbreak Caused By Low Chlorine In Flint Water

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Workers spray to kill fleas in a public school in Antananarivo, Madagascar's capital. A bite from an infected flea can spread the plague, which has stricken 157 people in the island nation since August. Anadolu Agency/Getty Images hide caption

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Anadolu Agency/Getty Images

Kenyan health officials take the temperatures of passengers arriving at the Nairobi airport on Thursday. Kenya has no reported cases of Ebola, but it's a transportation hub and so is on alert. Simon Maina/AFP/Getty Images hide caption

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Simon Maina/AFP/Getty Images

A Virtual Outbreak Offers Hints Of Ebola's Future

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Developing a vaccine for meningitis B was tricky. Even the existing vaccine doesn't protect against all B strains. Josef Muellek/iStockphoto.com hide caption

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Josef Muellek/iStockphoto.com