Thank you, Seil, for responding. I have never worried about it until this new season, because for the first time I am seeing new leaves that are speckled dying and falling off, but I am starting to think it's not from the virus but from an underlying severe deficiency. such as a lack of nitrogen. I plan to give the bushes a good dose of fish emulsion and see if that helps.
The first two are from an older Double Delight, the next two from a Chrysler Imperial which actually had plaid-like red roses last season from the areas affect, and the last from the new DD still in a peat pot.