Geneva, October 11 (RHC)-- Concern is mounting across the world as the killer Ebola virus is spreading to other continents after claiming almost 4,000 lives in West Africa. More people across the globe are being diagnosed with the deadly Ebola infection, including two cases in the U.S., one in Spain, and a recent finding in Australia.

A 50-year-old nurse in Australia has become the latest victim of the virus after she developed symptoms following a visit to Sierra Leone. The Queensland Chief Health Office reported: “She came back into the country and was perfectly well at that time. She did not have any symptoms; she didn't have a fever, so it’s only since this morning that she’s had a low grade fever. She’s been at home, isolated on her own home testing herself.”

Meanwhile in Europe, Germany admitted a third Ebola patient, a Sudanese doctor, for treatment after taking care of two World Health Organization (WHO) employees who were infected with the disease. And authorities in the United States have began screening people at airports over the spillover of the virus.

Ebola is a form of hemorrhagic fever whose symptoms are diarrhea, vomiting and bleeding. The virus spreads through direct contact with infected blood, feces or sweat. It can be also spread through sexual contact or the unprotected handling of contaminated corpses.

Ebola remains one of the world’s most virulent diseases, which kills between 25 to 90 percent of those who contract the disease. There is currently no known cure for Ebola.