Our Rose Society watched a webinar sponsored by Star roses and a few universities who are studying Rose Rosette Disease. Sorry I don't have a link for it. RRD HAS appeared in western states in the last 50 years! It was bad there 40 years ago, then died out. Right now, the midwest and central plains states have the worst outbreaks. We also have the most multiflora rose, which was deliberately planted as a living fence.
If you have multiflora rose anywhere near your property, get rid of it!
I've removed around 60 roses so far from my yard. We still have wild multiflora popping up in areas where it's hard to mow. It's a constant chore to take it out, and then to dig out my prize roses who show RRD symptoms.