Vampires are mythological or folkloric
beings who subsist by feeding on the life essence (generally in the
form of blood) of living creatures, regardless of whether they are undead or a
living person.
Although vampiric entities have been recorded in many cultures and
according to speculation by literary historian Brian Frost that the
"belief in vampires and bloodsucking demons is as old as man himself",
and may go back to "prehistoric times",
the term vampire was not popularized until the early 18th
century, after an influx of vampire superstition into Western Europe from areas where vampire legends were
frequent, such as the Balkans and Eastern Europe,
although local variants were also known by different names, such as vampir
(вампир) in Serbia and Bulgaria,
vrykolakas
in Greece
and strigoi
in Romania.
This increased level of vampire superstition in Europe led to mass
hysteria and in some cases resulted in corpses actually being
staked and people being accused of vampirism.