A YouTuber called James Tullos posted a video a while back called All The Types Of Vampires, in which he... um... talked about all the different types of vampires!! :-) (Thanks to Shanster Adrian for alerting me to its presence.) It's an interesting piece, in which he tackles vampire lore and how it differs from book to book and series to series.

There's a section on Cirque Du Freak, starting around the 11 minutes 45 seconds mark. It only runs a minute and a half, but James packs a lot into that short time frame. He also mentions it again later in the video, in the segment that starts just after the 16 minutes mark.

You can see the full video here: https://www.youtube.com/watch?v=8qQLvwQmKYc