Etsuko kawada does not know the exact year her son was infected with the hiv virus. But most of the 1,400 haemophiliacs in Japan who contracted hiv through contaminated blood products got the disease in 1983, when Ryuhei Kawada was seven years old. Eighteen years later, the doctor at the centre of this tragedy has at last been tried for professional negligence. The prosecutors had demanded a three-year prison sentence. Yet, when the trial ended on March 28th, Takeshi Abe was aquitted.
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