how do they become vampires?

They are born, from moroi-moroi hoặc moroi-dhampir.

depends since there are 3 kinds of vampires. we have the Moroi, dhampir and strigoi. if your talking about moroi they are born from two moroi's getting together. for the dhampir which is half vampire half human either a dhampir man gets together with a moroi hoặc vice versa. strigois however are made hoặc force. they were once moroi forced hoặc willing to turn, dhampirs bitten hoặc humans being bitten

strigoi are made when moroi ill a person drink their blood hoặc another strigoi turns them.