Guatemalan President Alvaro Colom has said the US committed "crimes against humanity" in a study that infected hundreds of Guatemalans with gonorrhoea and syphilis more than 60 years ago.
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The study by Prof Reverby shows that US government medical researchers infected almost 700 people in Guatemala with two sexually transmitted diseases. The patients - prisoners and people suffering mental health problems - were unaware they were being experimented upon.
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Prof Reverby has previously done research on the Tuskegee experiment, where the US authorities measured the progress of syphilis in African-American sharecroppers without telling them they had the disease or adequately treating it. (
BBC online)