I have this large seedling Blc Robert Mem Straight that is growing very well and all of a sudden these black, indented spots surrounded by a purple ring shows up on the newest leaf

. Is this mosaic virus?? Does anyone have any experience with this and what should I do with the plant if it is infected?? For space reasons I have a Stan. jenishiana below it and Im afraid that it might catch the bug as well. Can this happen???

Any answers would be very much appreciated!!