Kenneth C. Frazier, Merck’s executive vice president and general counsel, has been named executive vice president and president, global human health, Merck & Co. Mr. Frazier will oversee more than 30,000 employees and have responsibility for the company’s marketing and sales organizations worldwide, including the global pharmaceutical and vaccine franchises. Mr. Frazier will lead the global human health organization in the preparation, launch and marketing of new products a...