The country has the world's fifth-highest number of infections, and largest tally in Africa.
Alongside calls for reform, historians say a re-examination of how US racism got to this point is needed.
Nigeria's greatest Olympian ran his best race at Sydney 2000 - but would have to wait until 2012 for the result to be confirmed.
Kenyan activist Phyllis Omido has been ignored, harassed and arrested, but she never gave up.
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