Ebola nurse Pauline Cafferkey 'critically ill' in Royal Free isolation unit

A nurse who contracted Ebola while working in West Africa is now "critically ill" with complications arising from the infection.

Pauline Cafferkey was readmitted to a specialist isolation unit at the Royal Free Hospital in London last week.

The 39-year-old contracted the virus while working in Sierra Leone last year.

She was successfully treated but it was discovered last week that the virus was still in her body.

Richard Lister reports.