Isn't the collective noun for a group of vampires "vogue?"
It's true that vampires have always symbolically manifested illicit sexuality. Hence, Polidori and LeFanu's vampires. It is important to note that this is a recurrent theme but its actual presentation depends upon what is regarded by the author of book or film as deliciously illicit. Polidori thought it was Byron (in real life too?) and LeFanu thought it was lesbians. But Hammer Films generally simple heterosexual fornication was sufficient. Anne Rice thought homosexuality qualified.
And there is also the puritanical equation sex=death, which which brings in hints of necrophilia. The recent Swedish vampire film Let the Right One in hit that key hard (as well as hinting at pedophilia.) Claudia in Interview with the Vampire also expemplified this aspect. Dracula's Daughter had a pretty obvious lesbian rape. The Son of Dracula (I think, the one where Lon Chaney Jr. was Count "Alucard,") undeath as an escape from death reads as escape from real sexuality to a fantasy, safe sexuality.
The hurt and comfort scenario for the poor victim of perverse sexual urges informs not just some vampire stories but some werewolf stories, although werewolves are more specifically symbolic of rape. The appeal of Dark Shadows' Barnabas leaned heavily on this. But remember the competing popularity of David Selby's Quentin!
But the only vampire really popular for a long time was Dracula. Bram Stoker had serious syphilis issues (in real life apparently.) This is why the Coppola atrocity had Van Helsing ranting about syphilis. The obtuseness in stating symbols in plain words is hard to get past, so that movie was a flop. The scene where Jonathan decides to join Mina in undeath if they fail to save her was an emotional climax in the book. Movies usually fail to get this, because the syphilis angle is hard to get past. In fact, they usually deal with the adultery angle by mimimizing the Jonathan Harker character, sometimes even blending or substituting Renfield. And they do this despite the fact that the plot of Dracula makes no sense without realizing that Harker's special knowledge of Dracula is the only reason they have a chance. That shows I think how deep the feelings can run, even if masked in symbolic form. Or should that be because? The subtext of syphilis gave Dracula an added oomph the others lacked.
Which brings me back to the vogue of vampires that we have seen in the last thirty some years. Briefly, the impetus is AIDS. Vampirism in the modern form feeds variously on the old traditional symbolic weight as illicit sexuality. But the vampire blood now is also a magical victory over death by infection. The overall thrust for sexualization of girls at younger and younger ages can be shamelessly pursued by vampires as well, because they are not "really" sexual.
PS One of the most overlooked vampires, Vamp, with Chris Makepeace, Grace Jones, Sandy Baron and Robert Russo, had a very amusing scene when two vampire women were sitting a twosided vanity. The twosided mirror in the middle was gone: The two women were doing each other's makeup!