I just encountered something that I find a little fishy. I researched Medicine and Sanitation and started build Hospitals and Waste Management Plants in all my cities. Until then, I had gone for many, many turns since the last occurence of plague (Baffled Bovine Breakdown) or disease (i.e. in swamps or floodplains). But as soon as I got these techs (one of which is supposed to reduce disease and plague), I immediately got a plague outbreak, which has now spread throughout my empire, and two of my cities in Jungle areas started getting disease for several turns in a row.
This might not be specifically related to this mod, but it seems pretty fishy. It could just be bad luck, but I am inclined to be suspicious. Has anyone heard of a similar problem before? Is it a known problem? I am running C3C 1.22, by the way.