A Kenyan scientist Dr.Ephantus Njagi (L) prepares to inject volunteer Pamela Mandela (C) with a Kenyan-made Aids vaccine as Kenyan health minister Sam Ongeri (R) watches March 6, 2001. Trials of the new Kenya Aids Vaccine Initiative developed by Kenyan and British scientists from prostitutes found to be immune to Aids, and of a type common in Sub-Saharan Africa, began today and would continue for a period of about eight years.

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