It looks like we've got a full-blown outbreak on our hands, spreading out from the Midwest, particularly Kansas City and Chicago. Ten states have now requested assistance from the Centers for Disease Control for dealing with a surge in rare EV-D68 infections, including Colorado, Georgia, Illinois, Iowa, Kansas, Kentucky, Missouri, North Carolina, Ohio, and Oklahoma.
EV-D68 is, essentially, a very severe case of the common cold. The tides of the usual summer-cold season are doubtless helping to spread it, particularly kids returning to school and passing it around to each other. Normal safety practices are the only way to slow it down: wash your hands, disinfect commonly touched surfaces, don't share eating utensils, avoid close contact with infected people, etc.