I`m afraid that, since the industrial revolution, there`s been a huge migration from the countryside to towns and cities, whose populations have soared. The last 50 years has also seen a huge growth in global air travel which has created the perfect conditions for pandemics to occur. Let`s hope science can find a speedy solution for this current emergency, but I think, in any event, we have to change the way we live our lives, otherwise history will repeat itself.