Encampments
Roll 14+ for disease to be present
3d6 Type of Disease

3-8 Dysentery
9 Food Poisoning
10 Minor Disease
11 Cholera
12 Hepatitis
13 Pneumonia
14 Typhoid
15 Typhus
16-17 Bubonic Plague
18 Pneumonic Plague

Settlements
Roll 15+ for disease to be present
3d6 Type of Disease

3-7 Dysentery
8 Food Poisoning
9-12 Minor Disease
13 Cholera
14 Hepatitis
15 Pneumonia
16-17 Typhus
18 Bubonic Plague

Animals
Roll 16+ for disease to be present
3d6 Type of Disease

3-9 Food Poisoning
10-13 Minor Disease
14 Typhus
15 Rabies
16-18 Bubonic Plague

Contaminated Water
Roll 16+ for disease to be present
3d6 Type of Disease

3-10 Dysentery
11-12 Typhoid
13-18 Minor Disease