Anna Cross contracted the deadly virus in February while caring for patients as a staff nurse in Sierra Leone, one of the three most-affected West African countries. In March, she was admitted to the Royal Free in London and agreed to be administered a new drug called MIL 77.
The 25-year-old woman is the first Ebola patient to be given this experimental drug, which is reported to be based on ZMapp, another medicine under development as a potential Ebola cure.
Ebola is transmitted through direct contact with the bodily fluids of those infected. There is no officially approved medication for the disease, though several countries are working on vaccines.