Aaron's Blood (2017)

Aaron copes with his new life as a single father and the distant relationship he shares with his only child, Tate. A timid hemophiliac, Tate is roughed up at school and lands in the hospital, where he must fight for his life. He makes a miraculous recovery after a necessary blood transfusion, but Aaron begins to notice progressively strange behaviors in his son. Faced with the grim possibility that his son could be becoming a vampire, Aaron tries to find the source of the infection.