One of the "hot" news stories over the past few months has been discussion of the growing impotency of antibiotic treatments for disease and infection. Due to widespread use of antibiotics over (primarily) the last century, antibiotic-resistant bacterial strains have started to emerge, making hospitals more and more dangerous, filled with diseases that are harder and harder to treat.
What this represents is a very serious problem. A large part of modern medicine succeeds due to the prevalence of antibiotics, and as they become less and less effective, disease related mortality will continue to rise even with access to adequate resources. Aware of these problems, research is being done into alternative solutions, such as anti-adhesion medication or probiotics, but until those methods are properly developed, developed countries will have a blind spot in the war against disease.