6. Tuberculosis
Often referred to simply as “TB,” tuberculosis is a word we have all heard at one time or another and probably thought it was another one of those historic diseases that we no longer have to worry about. This age-old disease is still very much alive, however, and it still affects people worldwide, including “developed” countries like the United States and those in Europe. One of the most frightening things about tuberculosis is that some strains of the disease are becoming resistant to the antibiotic treatments that have been used for decades to control it. Tuberculosis is a nasty bacterial infection that affects the lungs.