Pauline Cafferkey, a Scottish nurse who was diagnosed with Ebola after returning to Britain from Sierra Leone, is in critical condition, The Guardian reports.
Cafferkey, 39, was in Sierra Leone volunteering with a British-built Kerrytown Ebola treatment center. She developed a fever while waiting for a connecting flight to Glasgow at Heathrow Airport, but she was cleared to fly. After her condition worsened in Scotland, Cafferkey contacted officials, who transferred her to a London hospital.
The Royal Free hospital released a short statement on Saturday, which said that Cafferkey's condition "has gradually deteriorated over the past two days and is now critical."
Her doctors had warned that use of an experimental, anti-viral drug was not guaranteed to improve her condition.