Why are we so bad at fighting diseases? It seemed like after we discovered antibiotics, vaccines, and chemotherapy that diseases were going to be on the run, and all those ancient maladies and plagues would not witness the dawn of the next century. That we'd be getting new weapons and tools every decade, if not every few years, and each one would radically shift how we fought certain conditions.

But then, no major advancements. A new vaccine here, a new antibiotic there, but mostly just stalling. Regenerative medicine hit a brick wall, stem cells are more limited in applicability than previously estimated. If you get diagnosed with a solid tumor cancer, you're most likely going to be given treatments that are almost a century old, and some that are even older. Gene therapy is a new one, but it seems dead in the water with it's lack of a delivery mechanism. What gives?