After Michael slams David into the antler rack, he's not actually dead but playing dead. While the Frog Brothers, Sam, Michael, Star and Grandpa are battling Max, David ran for his freaking life and escaped into the night. He started another group of vampires, almost from that night on dubbed "The Lost Girls".
Not really, No. It comes from the never filmed proposed sequel who's script is somewhat hard to find. Unless you look at the timeline page.