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Subjects
- Yellow Fever[remove]330
- Disease Outbreaks81
- Brazil36
- Epidemics28
- Philadelphia -- epidemiology26
- Mortality21
- Philadelphia16
- United States15
- Mosquito Control13
- Epidemiology12
- Malaria12
- Diagnosis11
- Medicine11
- New Orleans11
- New York City11
- Public Health9
- Relief Work8
- Communicable Disease Control7
- Quarantine7
- History, 18th Century6