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Subjects
- Disease Outbreaks71
- Medicine62
- Yellow Fever60
- Disease30
- Mexico30
- Philadelphia30
- Philadelphia -- epidemiology28
- Smallpox -- prevention & control28
- Materia Medica27
- Medicine, Traditional27
- Mortality23
- United States21
- Massachusetts15
- Military Medicine14
- History, 18th Century13
- Resuscitation13
- Animal Husbandry12
- Charities11
- Fever11
- Forecasting11