In the era when people traveled by sailing ship and steamer, illnesses usually burned themselves out before boats reached shore, a new study finds.
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Wildfire smoke from the Western United States and Canada is blowing across the Northeast, lowering air quality and endangering vulnerable populations.
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A new study paints a complex picture of the outbreak, suggesting that the virus could be spreading in multiple ways and that it is not always mild in cows.
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A fierce battle with Georgia over a Medicaid experiment with stricter enrollment underscores the vast divide between parties over how to cover lower-income Americans.
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The federal Centers for Disease Control and Prevention said 28 people had been hospitalized with listeria infections across a dozen states.
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