How deadly Ebola has spread across the globe: Health officials try to trace 30,000 linked to death of US victim

                                                                                                                                                                                                      Fears of a global Ebola pandemic are 'justified' an expert has said after a U.S. citizen boarded a flight in Liberia carrying the disease to Nigeria, potentially infecting 'anyone on the same plane'. Nigerian health officials are in the process of trying to trace 30,000 people, believed to be at risk of contracting the highly-infectious virus, following the death of Patrick Sawyer in Lagos on Friday.