Den virus?

[Gage]

I bought this Den from HD maybe 9 months ago along with another similar one. The other one's leaves started getting yellow splotches. I thought it might be a fungal issue, so I sprayed with neem oil, only thing I know to do. Pretty quickly it got really bad fast, and a couple of the leaves started getting brown mushy places where the yellow had taken over, and yellow was beginning to be on every leaf. So I got rid of it, hoping that whatever disease wouldn't spread to the other nearby orchids. So, now a month or so has gone by, and these leaves are looking ever so slightly yellowish blotchy. It may not look that bad in the pictures, but these leaves were solid medium green before, and this discoloring has only been noticeable in the past couple of weeks. It's not a huge loss if I need to get rid of it, but of course I'd rather not. Can anybody offer advice, please?