Doctors in South Africa reporting a further improvement in the condition of the former president Nelson Mandela. President Jacob Zuma thanked that thousands of people who prayed for the former leader at various Easter church services over the weekend. From Johannesburg, here\'s Peter Biles.A statement from the South African presidency said Nelson Mandela had had a restful day and was continuing to receive treatment for his lung infection. The government in Pretoria says it\'s satisfied that he\'s getting the best possible medical care to enable his recovery and comfort. And doctors have reported a further improvement after four days in hospital. They've not said how serious Mr. Mandela's condition is. But there is obvious concern.___________________________________________________________________________________________.