Passengers line up to check in before their flights in May at Sky Harbor International Airport in Phoenix. Two new automated security lanes at Atlanta's airport are aimed at reducing long wait times. Matt York/AP hide caption

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The man who died of Lassa fever flew from West Africa to New York's John F. Kennedy Airport. Spencer Platt/Getty Images hide caption

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New Jersey Lassa Fever Death Reveals Holes In Ebola Monitoring System

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Why We Think Ignorance Is Bliss, Even When It Hurts Our Health

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The latest subject in standardized tests for kids: cholesterol. iStockphoto.com hide caption

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