US monitoring 100 people 'in contact' with Ebola diagnosed

Public health officials in Texas are tracking 100 people who are believed to have had contact with Thomas Duncan, the first man to be diagnosed with Ebola in the US.

He is still seriously ill in a Dallas isolation ward after travelling from Liberia.

Mr Duncan's family are now confined to their home under armed guard.

Alastair Leithead reports from Texas.