I don't get the ending
What did I miss? Sam Neil bites Ethan Hawke and gets sick. Then Ethan says that the cure implies drinking vampire blood.
But Ethan wasn't a vampire anymore, so how did that affect the bad guy? And since when drinking vampire blood became a cure? Ethan Hawke and Willem Dafoe did not drink vampire blood to turn back. And we're shown vampires eating their own blood throughout the movie. So I am confused.
Same for the soldiers at the end I guess. Drinking the blood of former vampires turns you back? But again, that's not what Ethan did to become human again, did he?