Joz,
These days CMV is far more common with tomatoes than TMV, that's for sure, but in your area there is still the possibility of other virus diseases.
What do you see re any insects buzzing around or on the plants and have you done anything to limit them b'c almost ALL viruses are insect transmitted, so it doesn't matter how far apart the plants are, it's more of a function of how far the insects travel.
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Carolyn
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