We used to have a thriving cut flower business (before we moved here to expand it and lost it) next to an abandoned railroad right of way. It went to weeds and my killer cat used to hunt there all the time, and bring the mice home to play with them. Then we noticed she was covered in aphids from hunting out there, and loved to drop the mice into the lily beds to play with them. Needless to say we had to maintain the abandoned strip and not only mow it but spray it too. So yes, virus vectors can have vectors of their own!
