Occasionally brown rings will be present on the canes. Growth is usually stunted. Viruses are transmitted and infect roses when one infected plant is grafted or budded with a healthy one. This typically occurs in the nursery where the plant was grown. Even though some plants may only show infection in a few leaves, the entire plant is infected and more symptoms may appear over time.
Most viruses are harmless unless the browning and yellowing become extensive.
Stunted plant growth may result. When you notice the signs of virus-infected plants, there is little you can do about it. No cure is available, but as there is very little natural spread of viruses between rose plants, only the weak plants need to be removed. A way to avoid viruses is to buy only healthy rose plants from a reputable dealer or nursery. Could be mosaic or streak virus.