After giving it much thought, I have realized that stupiosis (or stupidity) is extremely contagious and can be very fatal in certain circumstances.
No matter how hard the scientific community has tried to find a cure to fight this ailment, all efforts thus far have proven to be unsuccessful. Unfortunately to add to the woes of finding a cure for this ailment, the scientists looking for the cure have contracted Tinosis, and that is slowing things down as well.
No one knows where this disease came from, nor do they know of who is patient zero. There may never be a cure.