Are diseases more common in certain regions

crusader-kings-2

I was playing my Abbasid Caliphate game recently and saw a smallpox outbreak pop up in the south.

Normally this wouldn't be noteworthy but I stopped and realized that I hadn't seen one in many hours. In my Ireland game it seemed like I rarely went an hour without an outbreak, and in Norway one every two hours seemed normal even before I expanded beyond the borders of a single Kingdom. So that got me wondering, are disease outbreaks more common in some places than in others?

Best Answer

From what they've exposed in the text files, here's the information you can get about a disease:

tuberculosis = {
contagiousness = 0.2
outbreak_chance = 0.02
effect = {
    city_tax_modifier = -0.5
    supply_limit = -4
    max_attrition = 0.05
}
icon = 1
tooltip = TUBERCULOSIS_INFO
months = 24
trait = has_tuberculosis
always_get_message = no

timeperiod = {
    start_date = 769.1.1
    end_date = 1452.1.1     

    one_only = no
}

}

By what I can see here, it doesn't appear so. None of the diseases in the file have anything other than a flat "outbreak_chance" as far as that is concerned.