yes there has been a descoverie of a vampire in Hungary and that is not far away from Transilvania.

are vampires true are vampires true

The Mythos of Vampires does vary between countries, but certain geographic areas are very similar. For example while Romania, Poland, Czech Republic, and Hungary all have slightly different Vampires, most of the mythology is very closely related. Eastern Asia on the other hand still recognizes something as Vampire, but it is distinct from the Central and Eastern European Counterpart

Some collective nouns for vampires are a vein of vampires or a clot of vampires.

yes vampires are real, bats are vampires. but human vampires are not real