HIV/AIDS
Prior to 1985 many hemophiliacs became infected with HIV, the virus that causes AIDS (Acquired Immune Deficiency Syndrome), through blood products contaminated with the virus. Since that time, commercially prepared blood clotting concentrates have been screened for the presence of HIV and then further treated with other means such as heating and pasteurization to make them free of the virus.
Hepatitis
Most hemophiliacs who received large amounts of blood products were also exposed to hepatitis. Many of these people later developed chronic liver problems. Today, the same screening and viral inactivation methods used to eliminate HIV from the clotting concentrates are also effective against hepatitis.
