Hydromancerx
C2C Modder
These are not events and all disease events will be replaced by this system.
Sounds great!
I like how your system works. I see this could work well with TB's system on units to where the units could spread it to the cities.
Likewise I had additional ideas.
National Pandemic
If a certain % of your total cities get Outbreaks then you trigger a "National Pandemic" which highly increases unhappiness and revolutions.
Global Pandemic
If a certain % of all total cities get National Pandemics then a "Global Pandemic" is triggered for all. I am not sure what this would do but it should be terrible for everyone.