I suspect Trader is talking about the financial positions and risk analysis. You only need to look at IAGs share price to know that the smart money is being removed. Several other mining companies in West Africa have had share price meltdowns in the past few days, partly driven by Ebola. If it comes to that, there will be a financial market collapse, and Gold will go up (it's already been rising this past week).
Ebola has an incubation period of 21 days. People aren't exactly going to be honest in admitting they may have come into contact with an Ebola victim when arriving in Europe, no matter how many questions are asked of them.