Many behaviroal have been found to spread interpersonally through social networks in manner to infectious disease.Novel theortical framwork to study these phenomena is SISa pain model e.g Obesity and framingham heart study network,more detailed in the attached ref.
I paid attention and followed your questions for a few days. I also have assessed your “ embrace human nature” contagion model requirement. We have to recognize the fact that human nature, body biomolecules and infectious life entities such as viruses are formed by their unique various conglomerate combinations of atoms. From my bio-atomic safety engineering point of view, the “human nature” response to contagious infections basically will be guided by the atomic electrons sharing compatibility physics requirement of their bio-EMF (bio-Electron/Proton Magnetic Fields).
I hope that you can develop or find a scientific infection/contagion model that can apply and reflect the existing factor of bio-atomic physics of bio-EMF forming the human bodies.
Attached herewith are my two articles regarding the application of bio-EMF physics, trying to explain the specific phenomenon of Covid-19, mRNA technologies etc. for your information.