The announcement that CVS plans to acquire Aetna for US$69 billion raises hope and concerns. The transaction would create a new health care giant. Aetna is the third-largest health insurer in the United States, insuring about 46.7 million people. CVS operates 9,700 pharmacies and 1,000 MinuteClinics. A decade ago, it also purchased Caremark and now operates CVS/Caremark, ...

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Have you ever wondered why your computer often shows you ads that seem tailor-made for your interests? The answer is big data. By combing through extremely large datasets, analysts can reveal patterns in your behavior. A particularly sensitive type of big data is medical big data. Medical big data can consist of electronic health records, insurance claims, information entered by patients into websites such as PatientsLikeMe and more. ...

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