What is the cause or causes of Enterovirus d 68?

I was thinking about this because of the way this thing is moving through the midwest out to other states and because of the kids it is affecting the most tend to have asthma.

One of my ideas was that often drinking cows milk from a super market that isn't organic with  additives can contribute to asthma in the first place. So, I moved my son in the 1980s to either Organic milk with no additives or almond milk or soy milk or other substitutes and this helped my son a lot while he was growing up not have to go the hospital with asthma attacks.  Regular milk from a supermarket  if someone has asthma already is only going to make them worse.

So, my thought is that what if some new additive to milk as a preservative or additive of some sort is triggering this response mechanism?

Another way to look at this is what if cows are eating GMO corn or other GMO grains, this could concentrate the negative harm GMOS do in the milk too.

I hope a lot of kids don't die while companies cover up the truth with expensive lawyers. If 100 to 1000 kids die lawyers are going to have to think some more about this especially if one of the kids that dies is one of theirs or a relatives.