If they were successful in turning a normal pig into a vamp-pig, and that vamp-pig could in turn bite say, a human or another animal, and transfer the vamp bug, then you've potentially got a new tool you can use to transform the human population into vamps.
We've never been able to transform a vamp into a human in thousands of years.
There's only one entity in the universe that can transform a human into a new form that can be blood bound to a demon.
Stepping back, Deidre waited for the tea transform into what she remembered tea to be.
"You.ll have a sword to the throat if you don.t transform," Kris snapped.