Merck & Co., Inc. and The Mectizan Donation Program Congratulate Awardees of 2015 Nobel Prize in Physiology or Medicine for Discovery Leading to River Blindness Treatment

KENILWORTH, N.J.–(BUSINESS WIRE)–Merck (NYSE:MRK), known as MSD outside the United States and Canada, proudly congratulates William C. Campbell (pictured/Reuters/Brian Snyder), a retired scientist from Merck Research Laboratories, who was jointly named the 2015 Nobel Prize winner in Physiology or Medicine with Satoshi Omura for the discovery of avermectin, which led to Merck’s development of Mectizan (ivermectin), a treatment for river blindness (also known as onchocerciasis) in Africa, Latin America and Yemen. They will share the prize with Youyou Tu for her discoveries concerning a novel therapy against malaria.

River blindness is a parasitic infection that can cause intense itching, skin discoloration, rashes, and eye disease that often leads to permanent blindness. It is spread by the bites of infected black flies that breed in rapidly flowing rivers in the affected countries.

“We are particularly proud of our colleague Dr. Campbell whose innovation, passion and dedication to fighting diseases during his 30-year career at Merck enabled the development of Mectizan,” said Kenneth C. Frazier, chairman and chief executive officer, Merck. “Through our Mectizan Donation Program we have been working with partners for nearly three decades to make this medicine available, free of charge, to all those affected by river blindness. At Merck, we remain committed to bringing the best that our science and innovation have to offer to solve the world’s global health challenges.”

Established more than 25 years ago, the Mectizan Donation Program is the longest-running disease-specific drug donation program and public-private partnership of its kind. In 1998, Merck expanded the program to include the elimination of another disease, lymphatic filariasis. The program reaches more than 250 million people in the affected areas annually, with more than 2 billion treatments donated since 1987.

About Merck

Today’s Merck is a global healthcare leader working to help the world be well. Merck is known as MSD outside the United States and Canada. Through our prescription medicines, vaccines, biologic therapies and animal health products, we work with customers and operate in more than 140 countries to deliver innovative health solutions. We also demonstrate our commitment to increasing access to healthcare through far-reaching policies, programs and partnerships. For more information, visit and connect with us on TwitterFacebook and LinkedIn.

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