Graca Machel
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Nelson Mandela's wife Graca Machel is 'less anxious'

12 July 2013 Last updated at 15:56 BST

Nelson Mandela's wife Graca Machel has said she is "less anxious" about the health of her husband than she was a week ago.

"He continues to respond positively to treatment," she said.

The 94-year-old was admitted to hospital on 8 June with a recurring lung infection.

Graca Machel was speaking to reporters at the launch of a new identity card scheme for South Africans.