Merck & Co Inc was incorporated in New Jersey in 1970. The Company is a health care company that delivers health solutions through its prescription medicines, vaccines, biologic therapies and animal health products, which it markets directly and through its joint ventures. The Company's operations are managed on a products basis and are comprised of four operating segments, the Pharmaceutical, Animal Health, Alliances and Healthcare Services segments. The Pharmaceutical segment is the only reportable segment. The Pharmaceutical segment includes human health pharmaceutical and vaccine products marketed either directly by the Company or through joint ventures. Human health pharmaceutical products consist of therapeutic and preventive agents, generally sold by prescription, for the treatment of human disorders. The Company sells these human health pharmaceutical products to drug wholesalers and retailers, hospitals, government agencies and managed health care providers such as health maintenance organizations, pharmacy benefit managers and other institutions. Vaccine products consist of preventive pediatric, adolescent and adult vaccines, administered at physician offices. The Company sells these human health vaccines to physicians, wholesalers, physician distributors and government entities. The Company also has animal health operations that discover, develop, manufacture and market animal health products, including vaccines, which the Company sells to veterinarians, distributors and animal producers. The Alliances segment includes results from the Company's relationship with AstraZeneca LP until the termination of that relationship on June 30, 2014. The Company's Healthcare Services segment provides services and solutions that focus on engagement, health analytics and clinical services to improve the value of care delivered to patients. The Company's pharmaceutical products include therapeutic and preventive agents, generally sold by prescription, for the treatment of human disorders. Products within the Company's franchises are - Primary Care and Women's Health include Cardiovascular, Diabetes, and General Medicine and Women's Health; Hospital and Specialty include Hepatitis, HIV, Hospital Acute Care, and Immunology; Oncology includes Keytruda, Emend, Temodar, and Temodal; Diversified Brands includes Respiratory and Others; and Vaccines. The Animal Health segment discovers, develops, manufactures and markets animal health products, including vaccines. Principal products in this segment include - Livestock Products; Poultry Products; Companion Animal Products; and Aquaculture Products. The Company's competitors include other research-based pharmaceutical companies, smaller research companies with more limited therapeutic focus, generic drug manufacturers and animal health care companies.