A grief-stricken former President Nelson Mandela attended a memorial service for his son Makgatho, whose death of Aids complications last week underscored the silence still shrouding a disease that kills more than 600 a day in South Africa.

A grief-stricken former President Nelson Mandela attended a memorial service today for his son Makgatho, whose death of Aids complications last week underscored the silence still shrouding a disease that kills more than 600 a day in South Africa.