Nelson Mandela is responding "satisfactorily" to treatment and is making "stead progress," the South African Presidency has announced.
A statement on its website says: "President Nelson Mandela continues to make steady improvement in hospital.
"His doctors say he continues to respond satisfactorily to treatment and is much better now than he was when he was admitted to hospital on the 27th of March 2013.
"He has been visited by family and continues to make steady progress."
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Mr Ramaphosa, South Africa's deputy president, is likely to succeed current President Jacob Zuma when his term in office ends in 2019.