TSWV Infection?

[Salsacharley]

I have a raised bed containing 12 tomato plants and 22 pepper plants, plus a sage plant, bee balm and 2 monsterous Torch sunflower plants (didn't know how big they got).

One of the tomato plants is a Marglobe, and it is right in the very middle of the entire overly planted bed. All the plants in this bed are producing great fruit and all look from either very good to fantastic as regards their foilage and size, except one runt Gold Medal plant that has been stunted for 2 months, but doesn't look to be infected with anything that I can discern.

The Marglobe plant just began producing fruit with the "halo" type yellow/yellow-orange rings on the skin. I researched causes for such condition and it looks like it could be TSWV from the appearance of fruit. The plant is literally wedged in the middle of other plants, one of which is a Long Tom that is producing beautifully, and another Ox Heart that also produces very well. It is next to the runt Gold Medal as well, but is several feet taller and it has nice top growth.
There are some yellow leaves deep inside this Marglobe but the overall condition of the plant looks good.

I've been feeding these plants Texas Tomato Food for the past month.

I have 2 questions about this.

1. Is it possible to have TSWV on only one plant in a "mass" of tomato plants?
2. How can the Marglobe be the only plant with the "halo" symptoms in this mass of plants?

Any thoughts would be most welcomed.

Thanks,

Charley