For Christ's sake are you all illiterate. I said this is a virus that pops up in this region every spring and lasts until mid summer. EVERY F*CKING YEAR!! It's like influenza(which also starts here before going global), and those most at risk are children, the elderly and those with compromised immune systems. Just like the flu, some strains, when they mutate, seem to be more virulent than others. Unlike the flu there really isn't a shot for it yet.
This a short blurb dealing with its incidence in the States.
$1:
Incidence (annual) of Enteroviruses: estimated 10-15 million cases annually in USA (DVRD)
Incidence Rate: approx 1 in 27 or 3.68% or 10 million people in USA [about data]
Incidence extrapolations for USA for Enteroviruses: 10,000,000 per year, 833,333 per month, 192,307 per week, 27,397 per day, 1,141 per hour, 19 per minute, 0 per second.
Prevalance of Enteroviruses: Non-polio enteroviruses are second only to the "common cold" viruses, the rhinoviruses, as the most common viral infectious agents in humans. The enteroviruses cause an estimated 10-15 million or more symptomatic infections a year in the United States.
Most adults write it off as a minor ailment. This isn't some plague from the bible, or worse some secret government lab, anymore than any other common virus is.