The number of methicillin-resistant Staphylococcus aureus infections in the U.S. decreased by nearly 30% from 2005 to 2011, and hospital-acquired cases declined by more than half, CDC officials reported. Another study found high exposure to hog manure in crop fields as well as living near pig farms was associated with MRSA community-acquired infections. The reports appear in JAMA Internal Medicine.

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