When a character is exposed to a treatable disease, the character must make an immediate Fortitude
saving throw. The victim must make this roll when he or she comes into contact with an infectious carrier, touches an item smeared with diseased matter, consumes food or drink tainted with a disease, or suffers
damage from a contaminated attack. If the character succeeds, the disease has no effect on him or her-the character's immune system fights off the infection. If the character fails the save, he or she takes
damage after an
incubation period; once per day thereafter, the character must succeed at a Fortitude
saving throw to avoid
secondary damage. Two successful
saving throws in a row indicate that the character has fought off the disease and recovers, taking no more damage.
Type: The disease's method of delivery-ingested, inhaled, or via an injury-and the DC needed to save. Some injury diseases can be transmitted by a wound as small as an insect bite. Most diseases that are inhaled can also be ingested (and vice versa).