Formulas /
Disease
Your disease rate is based on your population density, and your total number of hospitals.
For example, let's say you have a population of 1,000 and 10 housing and 1 dock. We would divide your population by the number of buildings (11) + 1 to avoid any divide by zero errors, and then multiply it by two for disease. In this case, that would come out to be 166.66. This is our disease rate. Luckily, it caps at 100%. But in this scenario, our population would not be growing due to so much disease. We could build additional hospitals to lower the disease by 5% each hospital. Or we could build more of any other building (except watch towers) to bring down our population density.