See (Copy and paste):

http://www.springerlink.com/content/n7006m6l7325156m/

I do not as of this date have a copy of the full paper (it was published online July 7, 2010.

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Is this virus common in the U.S.?

A recent Davis full paper concerning Rose Spring Dwarf is available for general viewing (see link below):

See Table 1 for the results of their aphid spread tests.

Also, of interest is that it appeared in their virus indexed plantings:

"In this test, RSDaV was detected in many different rose species and cultivars from the Foundation Rose Collection at FPS. In all, 129 plants in this collection were tested, and 77 were positive for RSDaV. Some of the hybrid rose cultivars tested positive for RSDaV included Queen Elizabeth, China Doll, Heirloom, Lowell Thomas, Jack Frost, New Dawn, Uncle Joe, Bridal White, Butterscotch, and Cynthia. It is interesting that the virus was detected in more than 69 plants in two rows (total number of plants in these rows was 89) of the collection which were planted in the mid 1990s. In all, 162 samples of R. multiflora from the virus indexing rose blocks also were assayed in the spring and RSDaV was found in 94 plants. The majority of RT-PCR-positive R. multiflora plants were symptomatic. Another 40 additional plants from the same virus-indexing blocks were tested in the summer and 6 were positive."

Here is a link that might be useful: link for Davis full paper