At least 64 people have been infected with hepatitis C after receiving transfusions of tainted blood at a county hospital in southern China. The authorities at the Guizhou Province hospital traced the infections to contaminated blood from a single donor who had sold blood to the facility from 1998 to 2002. The police have detained the hospital's former chief on suspicion of illegally collecting and using the blood. Hospital officials also blamed improper screening of the blood supply for the spread of the infection.