With ebola in the news, it's worth placing it in the broader context of exotic epidemic diseases cursing status-striving societies, where laissez-faire norms open the floodgates to all manner of vile pollution from outside.
The last peak of status-striving, inequality, and immigration was circa 1920, right when the Spanish flu pandemic struck. During the Great Compression, with immigration nearly ground to a halt, epidemic diseases looked to become a thing of the past. That sunny man-on-the-moon optimism of the 1960s would be undone by the Me Generation of the '70s. Not coincidentally, old diseases began rearing their ugly heads once more.
See this earlier post that examined the rise and fall and rise of epidemic diseases and pests, in tandem with the trends of inequality and immigration. Vaccines, hygiene, public health initiatives, etc., seem to have little or nothing to do with the fall, which in several cases was well underway before the vaccine was even discovered, let alone administered across the population.
It could have boiled down to something simple like the body not being burdened by as much stress as in hyper-competitive times, and keeping the ecosystem of diseases manageable by not allowing in boatload after boatload of new strains. Since ancient times, global migration has spread contagious diseases, but the world became less intertwined during the Great Compression.
Ebola will not become the pandemic of our neo-Gilded Age because it doesn't spread so easily. But ebola is just the tip of the iceberg of what is pouring into our country, and Western countries generally. It is not an isolated curiosity, but part of a larger population of pathogens being trucked and flown into this country every day.
One of those bugs, as of now an unseen up-and-comer, will soon enjoy its glory days just as the Spanish flu did 100 years ago. You can't say that America doesn't encourage the underdogs to give it their all.