About Merck & Co., Inc.
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Merck & Co., Inc. is an American multinational pharmaceutical company that develops and manufactures a wide range of products including prescription medicines, vaccines, biologic therapies, and animal health products. The company operates as Merck Sharp & Dohme (MSD) outside the United States and Canada, serving customers in over 140 countries worldwide. Merck is particularly recognized for its contributions to oncology, immunology, and vaccines, with major products including Keytruda for cancer treatment and Gardasil HPV vaccine.