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Disease Outbreaks
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10
Yellow Fever
5
Philadelphia
2
Alkalies
1
Boston -- epidemiology
1
China
1
Diagnosis
1
Egypt
1
Naval Medicine
1
New York City
1
Pennsylvania
1
Plague
1
Scarlet Fever
1
Typhus, Epidemic Louse-Borne
1
United States
1
Virginia
1