CVS Health has struck a deal to buy Aetna, the insurance giant. The combined companies would have more clout with drugmakers and would aim to bring more health care to consumers in retail clinics.
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Nurse practitioner Leah Martin examines 13-month-old Mia Beavers at a CVS clinic in Chagrin Falls, Ohio, in early 2009. Mia's mother, Brittany, looks on.
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