f people cannot eat full rations, their strength wanes, and they are more likely to fall ill. If they are not seen regularly by a doctor, their chances of getting sick rise further. Occasionally, travelers bring disease to your city despite your best preventative efforts. Venus has also been known to send plagues upon a city which has incurred her wrath.

When disease strikes, a certain number of people fall sick. If there is space for them in hospitals, they will be cured. Those who cannot be taken in by the hospital, unfortunately, will die.

Disease understandably sours the mood of your citizens somewhat.