I really love the idea of your myth and I feel like you get the point across really well.
AIDS and HIV are sexually transmitted diseases, caused through unprotected sexual behaviors. It requires exchange of bodily fluids to take place. Unequal Power relations, and social injustices have nothing to do with it.
It is Antigone that speaks the lines
The answer is: Serious and forceful.
Tone: Is an attitude of a writer toward a subject or an audience. Tone is generally conveyed through the choice of words, or the viewpoint of a writer on a particular subject. In this case Lake´s words give the impression he is being serious and forceful.