JOHANNESBURG (AP) — South Africa's former president, Nelson Mandela, remains "quite ill" and unable to speak because of tubes that are keeping his lungs clear of fluid, though he is relaxed, his former wife told a South African newspaper.

"He remains very sensitive to any germs, so he has to be kept literally sterile. The bedroom there (in his suburban Johannesburg home) is like an ICU ward," Winnie Madikizela-Mandela told the Sunday Independent. "He is 95 years old and it is difficult for him, because of all the tubes that are in his mouth to clear the (fluid from his) lungs, and prevent an infection recurring." Because of those tubes, she said, he communicates through his face.

"But the doctors have told us they hope he will be able to recover his voice," she said, adding that he is being treated by 22 doctors at his home.

Mandela's former wife shot down reports that the former anti-apartheid leader and Nobel Peace prize winner was on life support.

"I have heard this nonsense that he is on life support. He is not," she told the newspaper. When asked if he was peaceful, she said, "Very. When he is very relaxed, he is fine," adding that it helps he is at his home, an environment that he recognizes.

Mandela has been in intensive medical care at his Johannesburg home since being discharged on Sept. 1 after nearly three months in a hospital for a recurring lung infection.

Madikizela-Mandela's comments come days before the release of the film based on Mandela's autobiography "Long Walk to Freedom" and which stars British actor Idris Elba. Madikizela-Mandela, 77, published a book of her prison diaries earlier this year entitled "491 Days: Prisoner number 1323/69."

"Of course, I wish he could read the book, but I really wish he could see the film," she said.

Madikizela-Mandela and Mandela divorced in 1996.

Mandela served a single five-year term as president of South Africa and afterward he focused on charitable causes, including the fight against HIV/AIDS. He withdrew from public life years ago. Mandela's last public appearance was in 2010 at the World Cup soccer tournament, which was hosted by South Africa. At that time, bundled against the cold, he waved but did not speak to the stadium full of fans.

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  • 1918

    Born July 18, 1918, son of a counselor to the paramount chief of the Thembu people near Qunu in what is now the Eastern Cape. He is widely known in South Africa by his clan name, Madiba. <br><em>Caption: Portrait of South African political leader Nelson Mandela between 1945 and 1960, wearing the traditional outfit of the Thembu tribe. (Photo by API/Gamma-Rapho via Getty Images)</em>

  • 1940s

    Mandela devoted his life to the fight against white domination, leaving Fort Hare university in the early 1940s before completing his studies. He founded the ANC Youth League with Oliver Tambo and Walter Sisulu. <br><em>Caption: Nelson Mandela (3rd from right), leader of the African National Congress (ANC), Patrick Molaoa and Robert Resha charged with treason by the South-African Union walked to the room where their trial was being held, Drill Hall, Johannesburg, South Africa.(API/Gamma-Rapho via Getty Images)</em>

  • 1961-1963

    Mandela was among the first to advocate armed resistance to apartheid, going underground in 1961 to form the ANC's armed wing, Umkhonto we Sizwe (the Spear of the Nation). Charged with capital offences in the 1963 Rivonia Trial, his statement from the dock was his political testimony. "I have cherished the ideal of a democratic and free society in which all persons live together in harmony and with equal opportunities. It is an ideal I hope to live for and to achieve. But if needs be, it is an ideal for which I am prepared to die." <br><em>Caption: The South African political leader Nelson Mandela giving a speech before the African Congress. (Keystone-France/Gamma-Keystone via Getty Images)</em>

  • 1964

    He was sentenced to life imprisonment in 1964. <br><em>Caption: Eight men, among them anti-apartheid leader and member of the African National Congress (ANC) Nelson Mandela, sentenced to life imprisonment in the Rivonia trial leave the Palace of Justice in Pretoria 16 June, 1964, with their fists raised in defiance through the barred windows of the prison car. The eight men were accused of conspiracy, sabotage and treason. (OFF/AFP/Getty Images)</em>

  • 1960s - 1970s

    Mandela spent nearly two decades as a prisoner on Robben Island, a barren lump of rock that sits in shark-infested waters off the coast of Cape Town and served as the apartheid government's main jail for political opponents. During his incarceration, Mandela largely faded from the public imagination in South Africa, although his then-wife Winnie kept the ANC torch alight throughout the late 1960s and 1970s. <br><em>Caption: Winnie Mandela, wife of jailed ANC leader Nelson Mandela, defied her banning order by addressing a huge funeral crowd on Tuesday, Dec. 3, 1985, in Mamelodi Township at Pretoria. (AP Photo/Greg English) </em>

  • 1980s

    In the 1980s, he became the focus of the international anti-apartheid movement, and the "Free Nelson Mandela" slogan started to seep back into South Africa despite heavy censorship and curbs on political movements. <em><br> The demonstration for liberty of Nelson Mandela in Paris, France on June 1, 1986. (Francois LOCHON/Gamma-Rapho via Getty Images)</em>

  • 1990

    F.W. de Klerk, South Africa's last white president, finally lifted the ban on the ANC and other liberation movements on February 2, 1990, and Mandela walked free from jail nine days later, an event beamed live around the world. <em><br>Leader of National Party F.W. de Klerk at press briefing during private visit to Windhoek, Namibia. (Selwyn Tait/Time & Life Pictures/Getty Images)</em>

  • 1994

    A year later he was elected president of the ANC and in May 1994 was inaugurated as South Africa's first black president. He used his prestige and status to push for reconciliation between whites and blacks, setting up a Commission led by Archbiship Desmond Tutu to probe crimes committed by both sides in the anti-apartheid struggle. <em><br>Caption: President Nelson Mandela of South Africa celebrates his historic election win at the ANC victory party on May 2, 1994, at Carlton Hotel in Johannesburg, South Africa. (Photo by Per-Anders Pettersson/Getty Images)</em>

  • 1998

    South Africa shared the pain of Mandela's humiliating divorce in 1996 from Winnie Mandela, his second wife, and watched his courtship of Graca Machel, widow of Mozambican President Samora Machel, whom he married on in July 1998. <em><br>Caption: Winnie Mandela (c), then-wife of African National Congress (ANC) President Nelson Mandela, and then-head of the ANC social welfare department, announces 15 April, 1992, in Johannesburg to journalists that she resigned from her position in the wake of the collapse of her marriage with the ANC leader and renewed allegation of her involvement in townships killings. At right, her lawyer, Ismael Ayob. (REVOR SAMSON/AFP/Getty Images)</em>

  • 1999

    In 1999, he handed over to younger leaders he saw as better equipped to manage a fast-growing, rapidly modernising economy - a rare example of an African leader voluntarily departing from power. <em><br>Caption: South African Presiden Nelson Mandela (C) flanked by deputy presidents Thabo Mbeki (R) & F.W. de Klerk. (William F. Campbell//Time Life Pictures/Getty Images)</em>

  • 2007

    In 2007 Mandela celebrated his 89th birthday by launching an international group of elder statesmen, including fellow Nobel peace laureates Tutu and Jimmy Carter, to tackle world problems including climate change, HIV/AIDS and poverty. <em><br>Caption: Former South African President Nelson Mandela, left, is helped to his feet by his wife Graca, unseen left, retired Archbishop Desmond Tutu, right, and former U.S. President Jimmy Carter, center, after the launch of 'The Elders,' in Johannesburg, South Africa, on Wednesday, July 18, 2007. (Greg Marinovich/Bloomberg via Getty Images) </em>

  • Mandela made his last appearance at a mass event in July 2010 at the final of the soccer World Cup. He received a thunderous ovation from the 90,000 at the Soccer City stadium in Soweto. He was hospitalized for nearly a week in January 2011 in Johannesburg with respiratory problems. The icon celebrated his 94th birthday in July 2012. <em>Caption: Secretary of State Hillary Rodham Clinton meets with former South Africa President Nelson Mandela, 94, and his wife Graca Machel at his home in Qunu, South Africa, Monday, Aug. 6, 2012. (AP Photo/Jacquelyn Martin, Pool)</em>