A regional director with the World Health Organization on Tuesday said it was "unavoidable" at this point that more cases of Ebola would be confirmed in Europe.
"It is quite unavoidable," Zsuzsanna Jakab, the WHO's director in Europe, told Reuters, "that such incidents will happen in the future because of the extensive travel both from Europe to the affected countries and the other way around."
That said, Jakab added that Western Europe was still "at low risk" for widespread infection because it "is the best prepared in the world to respond to viral hemorrhagic fevers including Ebola."
On Monday, Spain announced that a nurse in Madrid had tested positive for Ebola, making her the first person to contract the virus outside of Africa. The nurse was one of several people who aided a Spanish priest who returned home after becoming infected in Sierra Leone.