That means there's an ongoing world wide effort to develop new cultivars that are immune to the new rust.
Not too long ago the Australian group that studies wheat gluten intolerance did some work on the matter and discovered that the peptides that cause celiac probably can't be bred out of wheat, barley or rye. They are turning to a dietary supplement ~ maybe another digestive enzyme that you'd take like lactace pills, or the package of enzymes they provide kids with cystic fibrosis.
Every now and then they have to replace the most common wheat cultivar
I did not know that but it certainly makes sense.
I have friends who are genuinely intolerant to gluten- it is amazing how many foods have gluten added. In the case of my son I had three sets of menus. I could use one set for about three months then he would get the green nasal drainage and the pouchy tummy, and I would swap to another set of menus. He had a fair amount of heart damage- finally outgrew the heart murmur when he was about 17. Store bought food was not doable due to the garbage added. Therefore a large garden, canning and dehydrating stuff.