Brilliant observation and analysis!
Excellent cross-linking of ideas, Alexandra (Sasha) Thompson! You can also build an argument that this addresses social environmental issues and their contribution to the HIV epidemic. Bring on the environmental health perspective.
The other issue that nevertheless we must not overlook is the interconnected nature of these various risk factors. Sometimes these act together (polluted water, mosquitoes, poverty, other lifestyle illnesses). A growing movement in the age of big data is in exploring exposome. Traditionally, in epidemiological literature, we have been looking at these things in isolation, the time has come when we need to take a gigantic view incorporating everything.