Subject
- Plague164
- Cholera100
- Leprosy67
- Quarantine67
- Cinchona60
- Sexually transmitted diseases53
- Prostitution49
- Snake Bites41
- Shipping regulations40
- Cinchona alkaloids37
- Quinine37
- Vaccination33
- Sanitation30
- Malaria27
- Medical education26
- Embassies and consulates25
- Muslim pilgrims and pilgrimages25
- Medical legislation22
- Smallpox21
- Pilgrimages15