This is slightly off-topic but I've recently read the book "Growing Artificial Societies: Social Science From the Bottom Up" and in my spare time I've been slow

This is slightly off-topic but I've recently read the book "Growing Artificial Societies: Social Science From the Bottom Up" and in my spare time I've been slowly implementing something very similar to the sort of "Maximally-Minimalist" simulation they describe. This simulation includes the concept propagation of disease, again in a sort of "Maximally-Minimalist" way. While it's suitable in the sense that it fits with the rest of simulation, I've identified it as something that I am going to have to learn about before I extend that part of the simulation beyond what's already been described. So I was wondering if you might know of a resource which presents various minimalist models of disease propagation that you could recommend. I'm not epidemiologist, I'm actually retired and studying economics as they pertain to environmental systems, so I'm not actually looking for anything that extremely complex or compute intensive... I'm just looking for something slightly more detailed that what I've got now and perhaps describes a step-by-step method towards modeling that's actually realistic.