These creatures do not die like the bee after the first sting, but instead grow strong and become immortal once infected by another nosferatu.
10 seconds sound clip from the Bram Stoker's Dracula (1992) movie soundboard.
You can hear this line at 01:25:19 in the Blu-ray version of the movie.
Quote context
[...]
- Gentlemen, shall we? One, two, three.
- Where is she? Where is she? What have you done with her?
- She lives beyond the grace of God, a wanderer in the outer darkness. She is vampyre, nosferatu.
- Come to me, Arthur. Leave these others and come to me.
- My arms are hungry for you, my darling. Kiss me and caress me, my darling husband, please.
[...]