Merck is a leading global biopharmaceutical company that has been inventing for more than a century, bringing forward medicines and vaccines for many of the world’s most challenging diseases. Through prescription medicines, vaccines, biologic therapies and animal health products, Merck operates in more than 140 countries to deliver innovative health solutions. Today, Merck continues to be at the forefront of research to advance the prevention and treatment of diseases including cancer, cardio-metabolic diseases, emerging animal diseases, Alzheimer’s disease and infectious diseases including HIV and Ebola. In addition, the company provides analytics and clinical services to the health care sector. The US market accounts for about 45% of sales.