My village suffered a few disease outbreaks throughout the years, and so far it's always been very easy to survive them — typically, only one or two citizens get the disease and they're quickly treated.
The diseases were of different types: smallpox, dysentery etc... but they all seemed to work the same way, so I assumed it was just flavor text. This time however, I got the Plague, and it was radically more lethal: in about one minute of time at 10x, the disease has spread to 36 of my 380 citizens and killed 5 of them.
It might be related to the size of the settlement or something else, or it might be that different diseases have different effects. Does anyone know about this?
Edit: The disease is gone. It took my two doctors a season to cure and killed around 50 citizens.