When a human being contracts AIDS, their DNA is replaced, and their very existence becomes deficient. In a cold light, it is a murderous disease but the reality is that the negation of viral infection only delays evolution. Nietzsche argued with and against Darwin on the nature of natural selection, and made the will to power applicable to more than just the human being. Highlighting the development of AIDS since the 1980s, I will show how diseases are able to shape society and evolve beings in a network of complexity theory created by the “self-organised behaviours of complex genetic regulatory systems”.