British Ebola survivor Will Pooley has flown to Atlanta with the hope of saving a new victim of the disease.
The 29-year-old nurse, who became the first confirmed British person to contract the virus, has reportedly offered to undergo a blood transfusion to help with the American's treatment.
The unnamed patient currently afflicted with the virus is a doctor who contracted the disease while working in Sierra Leone. It is understood he and Mr Pooley are close friends having worked together in Sierra Leone.
The men have the same blood type.
Following his recovery, Mr Pooley's blood now contains natural antibodies that can protect against Ebola.
Mr Pooley was put on a flight on Friday night, paid for by the World Health Organisation, to Atlanta where the doctor is being treated in an isolation unit at Emory University Hospital.
He plans to travel back to Sierra Leone once he returns from the US.