Answer: TMV virus is spread by physical contact on infected plants/soil with other plants. It actually can be on the seed too, but if you're buying seed from a reputable dealer, this shouldn't be a concern. It can't "jump" from one container to another, butif you work with the infected plant, then touch or move soil to the uninfected plant, it can spread. That's why it's best to remove and destroy any infected plants and soil.
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