There is no known remedy for any of the some 700 different mosaic viruses. But like I said before, those so-called some 700 hundred different mosaic viruses are all the same thing, even the viruses genetic markup is the same when you look at it in every kind of vegetable / fruiting plant that it has the ability to infect, that's why I said scientist should have simply defined the "Mosaic Virus", and then state, that the virus can infect some 700 different vegetable / fruiting plants, instead of calling each infection an all together different mosaic virus!
Anyhow... like I was saying there is no remedy for the virus, but it will not overly harm the plant or effect anyone that consumes any part of the plant. It's just a visual deformity that will appear sporadically in a plant that's infected by it. And in the case of the cannabis / hemp plant, it displays its self sporadically in the plant(s) fan leafs and can also make some buds, or simply bud sugar leafs, look rather strange! But I will add, when the virus shows its self that quick in a seedling, I will usually just kill her off as I don't have time to play with sick plants!
Other than that... if you take a clone from a plant that has the mosaic virus, the clone will also have the virus. But if you use a male or female plant for breeding that is infected with the mosaic virus, the mosaic virus cannot be passed through breeding / pollination. Why, because it's nothing more than an infection! That is caused by an airborne pathogen that attaches its self to the outer shell of a seed and when the seed is germinated, (splits open), it eats its way into the seedlings tap root to infect the plant! That's why most agricultural vegetable / fruiting type seed companies coat their seeds with a 5% to 7% solution of trisodium phosphate, (brand name: Thiram), which is done because its the only 100% method that stops the mosaic virus from infecting vegetable / fruiting type plants grown from seeds.