Horror movie from anytime between late 70s to early 90s (Sorry about the long window). I can recall a scene where people are dancing at a party (house party?) in dark (with just the disco lights on ?). Suddenly there's blood dripping from the ceiling and the blood seems contagious...LOL!. I think this takes place in a high-raised condominium. I'm sorry that's all I can recall :( I have been referred to Blade before but that’s not it.