WHITEHOUSE STATION, N.J.--(BUSINESS WIRE)--Merck & Co., Inc. today hosted its Annual Business Briefing and reviewed the progress the Company has achieved under a strategic plan designed to re-engineer the way Merck develops and distributes medicines and vaccines worldwide. Since 2005, Merck’s senior management team has been developing and implementing a new operating model under which customer focus drives drug discovery, development and marketing at the Company, Merck Chairman, President and Chief Executive Officer Richard T. Clark told investors and analysts today at the Merck Annual Business Briefing.