He also was treated for an acute respiratory infection in 2011, among other recurrent bouts of illness.

CNN: Mandela 'responding positively' to treatment in hospital

Mandela also was treated for an acute respiratory infection in January 2011.

CNN: Nelson Mandela hospitalized for routine checkup

Mandela, 94, was treated for an acute respiratory infection in 2011.

CNN: Keep Nelson Mandela in thoughts and prayers, Zuma says

He was also treated for an acute respiratory infection in 2011.

CNN: Nelson Mandela back in hospital with lung infection

In January 2011, Mandela was admitted to a Johannesburg hospital for what officials initially described as tests but what turned out to be an acute respiratory infection.

NPR: South Africa: Mandela In Hospital For Tests

Mandela was treated for an acute respiratory infection in 2011.

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Legionnaire's disease is an acute, respiratory bacterial infection that can be fatal.

CNN: Two workers possible victims of Legionnaire's