"Do they not?" That is a genuine surprise to him. The only thing that could be called close is a vampire crossing the line into wereanimal territory. That's a one-way trip.

"Vampires of my kind do not create progeny by any other means than turning. And, once turned, any supernatural abilities the human Medium might have had are lost. Or, rather traded for the powers that being a vampire provides." This unfortunate fact led the to unwilful turning of a lot of Mediums in older times in order to neuter such abilities as telekinesis or mind reading.

"Life force? You mean something of a more spiritual nature? I wouldn't know. Animal blood is very nearly as nutritionally satisfying for me, but I do have a preference for human and, recently, elf."