GlaxoSmithKline Plc operates as a science-led global healthcare company that researches and develops a broad range of innovative medicines and brands. It operates in three primary areas of business: Pharmaceuticals, Vaccines and Consumer Healthcare. The Pharmaceuticals business researches, develops and makes available medicines that treat a variety of serious and chronic diseases. The Vaccines business produces pediatric and adult vaccines to prevent a range of infectious diseases including, hepatitis A and B, diphtheria, tetanus and whooping cough, measles, mumps and rubella, polio, typhoid, influenza and bacterial meningitis. The Consumer Healthcare business markets a range of consumer health products based on scientific innovation. The company was founded on December 6, 1999 and is headquartered in Brentford, the United Kingdom.