Tuberculosis began to decline in the early 20th century, although it rebounded in the mid-1980s, and there are currently between 1.6 and 2 million deaths a year due to this illness. They are mainly in Africa, south-east Asia and areas to the east of the Mediterranean. What is tuberculosis? How are sufferers affected? Is it fatal? In which cases? How can it be prevented? We tell you everything there is to know about tuberculosis.