It's merely a COINCIDENCE that disease outbreaks occur along the major hubs of the Interstate Highway System. Follow the Yellow Brick Road
Just a coincidence...
Kansas City is one of the main hubs of the entire US. It is the crossroads of the Nation. Literally. Immigrants from South of the Border head non-stop to KC and from there you have I-35 N/S and I-70 E/W.
We've got EVD-68 already, and were one of the first reported incidents. Then it spread to Kansas, and Iowa and then Colorado and Oklahoma and... well, it's pretty clear I think.