* As a player, it is possible to catch a disease after contact with diseased animals or players, when standing on the same tile as them.
** It is also possible to catch a disease from contact with many non-diseased animals or players.
** It's possible to catch a disease when multiple accounts are embarked on the same [[:Category:Vehicles|vehicle]].
* When the power of a disease is over 100, skill gain is impaired.