No one knows exactly what rope worms are. It is suspected that they are a parasite/fungus that has been genetically modified from our genetically modified foods. (GMO)
I have had conversations with a professor emeritus of plant pathology and he has identified a new prion that is showing up in livestock that has been fed genetically modified foods. Really scary stuff.
Get your son on an all organic diet immediately. Look at the protocols on the Rope Worm group. Don't give him anymore vaccines, even the flu vaccine. They are showing up as contaminated with pesticides in independent tests. Go to the Moms Across America website. They have the test results.
No more Antibiotics either.
There is a testing group that will test the gut microbiome. Google Ubiome and consider ordering their test for your son. It may show some pathology that no one else will pick up.