When intraparty disputes split members into different groups, these groups are referred to as

What are the default groups that can be found in Server 2008

As vampires are mythical creature will little to no evidence proving their physical existence, I doubt there are any real vampire cults in the world. I would imagine however that there are sects or groups of people who adopt the vampire lifestyle, and they could be regarded as vampire cults in certain contexts.

Of course there are cults in Canada. There are cults anywhere!

The Witnesses are technically a sect of Christianity, as are almost all groups currently referred to as 'Christian'.