Dear experts.

This is weird, I am so sorry. I have a brother (15) who came back in tears from school today. They served him chicken breast there and when he was eating it he saw some blood in one of the pieces. It was pink, but not "faded pink", as he describes it. Which, of course, sounds like uncooked chicken. Other boys, however, started saying what if someone crazy in the chicken got mad at the world and was injecting HIV blood in the meat and now he would get sick. Please do not ask me why they said that and why would someone do such thing. I have no idea, but I am desperate. He is upset. I told him hiv cannot live in a chicken even if we assume it was injected AFTER it was cooked when it was cold, but he says I am not an expert and since HIV can live in a body for 16 days or so (because it can "feed off" the cells that are there) , similarly it has cells to sustain it in the chicken. Please don't laugh and don't ignore this question if you would be so kind.  He needs an expert opinion to confirm that even if chicken was cold (after it was cooked) , so heat would not kill the virus, and he has some cuts in his mouth+braces, HIV does not have the needed environment to survive within the chicken breast. I am so sorry again and thank you in advance.