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Contaminated haemophilia blood products

Health crisis in the late 1970s up to 1985

  • 13 min read
  • 3 chapters

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Through Immune system, HIV/AIDS and City

Hemophilia A causes a deficiency in Factor VIII, a protein required for blood clotting. Factor VIII injections are a common treatment to prevent or stop bleeding in people with hemophilia A.

Contamination of these and other products caused large numbers of hemophiliacs to become infected with HIV and hepatitis C. The companies involved included Alpha Therapeutic Corporation, Institut Mérieux (which then became Rhone-Poulenc Rorer Inc., and is now part of Sanofi), Bayer Corporation and its Cutter Biological division, and Baxter International and its Hyland Pharmaceutical division. Estimates for HIV infections in the United States alone range from 6,000 to 10,000, with another 4,000 in France, 2,000 in Canada and 1,200 in the United Kingdom, and many more worldwide.

Initial concerns

In 1981 concern was growing over an unidentified infectious disease associated with immune system collapse that would later become known as AIDS. In the U.S. it was found mostly in homosexual men and intravenous drug users, while in France a more diverse group of patients was affected. On July 16, 1982, the United States Centers for Disease Control and Prevention (CDC) reported that three hemophiliacs had acquired the disease. Epidemiologists started to believe that the disease was being spread through blood products, with grave implications for hemophiliacs who had routinely been treated with concentrate made from large pools of donated plasma, much of which was collected by commercial paid-donor plasmapheresis prior to routine HIV testing, often in U.S. cities that had large numbers of homosexuals and intravenous drug users and in some U.S. prisons and underdeveloped countries during the four or five years of the late 1970s through early 1980s before AIDS was discovered and recognized as a public health concern.

In January 1983, the manager of plasma procurement for Bayer's Cutter Biological division acknowledged in a letter that "There is strong evidence to suggest that AIDS is passed on to other people through ... plasma products." In March 1983, the CDC warned that blood products "appear responsible for AIDS among hemophilia patients." By May 1983, a Cutter rival began making a heat-treated concentrate and France decided to halt all imports of clotting factor concentrates.

Cutter feared losing customers, so according to an internal memo, Cutter "want[ed] to give the impression that [they were] continuously improving our product without telling them [they expected] soon to also have a heat-treated" concentrate. The process rendered the virus "undetectable" in the product, according to a government study.

By June 1983, a Cutter letter to distributors in France and 20 other countries said that "AIDS has become the center of irrational response in many countries" and that "This is of particular concern to us because of unsubstantiated speculations that this syndrome may be transmitted by certain blood products."

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