Ok there's this guy on the Internet who has a website (vampirewebsite.net is the site) and he claims that vampirism is a real disease. That is came out around the same time as HIV and AIDS in the mid-70s to early 80s and that there are hundreds of thousands of people afflicted with the disease and he's even got "evidence" to prove his theories. Including many web seminars from youtube that he's posted up on his site.