In its situation report of 11 March 2015, the World Health Organization (WHO) tallies a death toll of 9,961 out of 24,247 cases (41% mortality rate) in the three West-African countries of Guinea, Liberia and Sierra Leone. While the overall rate of new infections seems to be slowing down, the numbers nevertheless continue to rise. Infectious disease is the greatest threat to mankind, far higher than any imaginable terrorist plot. According to WHO statistics from about 10 years ago, infectious diseases are responsible for over 13 million deaths worldwide each year. That is 25% of all deaths worldwide each year. Distribution across the planet is highly uneven: in developing countries that percentage rises to half of all deaths. What does more than 13 million fatalities per year represent? Well, it corresponds more or less to the number of people who died in the Twin Towers on 9/11 every two hours.