Before RCADE's cherry pick, this was the statement "It is not clear why there has been a sudden increase in the number of cases in the US. According to Mark Pallansch, Director of the Division of Viral Diseases at CDC" RCADE's quote was just a WAG and if being very nice a WASG.
And this comment from RCADE was really right on point
There are 100 different types of enteroviruses that cause 10 to 15 million infections a year in this country.
There have been fewer than 100 cases recorded since it was identified in the 1960s, according to the Centers for Disease Control and Prevention
Compared with other enteroviruses, EV-D68 has been rarely reported in the United States for the last 40 years.