doesn't chemotherapy does something similar to this:

"The ability of chemotherapy to kill cancer cells depends on its ability to halt cell division. Usually, cancer drugs work by damaging the RNA or DNA that tells the cell how to copy itself in division. If the cancer cells are unable to divide, they die."

So wouldn't a low dose chemotherapy work on this drug?

It might, though the viral replication factories aren't necessarily the ones that are used for cells to replicate. If they do work, well, you'd have all those side effects of stopping cell replication that the parent mentioned - all those horrible side effects of chemo. Maybe it would be worth it, but it would have to be pretty darn effective to be worth those side effects.