Medicine: A Flea Survey

In the last 26 years, bubonic plague has spread east and west from India in a broad belt which now encircles the globe on both sides of the equator, roughly bounded by the 35th parallels of latitude. In Europe it is prevalent as far north as the 45th parallel, but in the Western Hemisphere it has appeared sporadically only in the large cities of the Gulf and Pacific Coasts. It is essentially a disease of the Tropics. Within this belt no preventive measures have been able to stamp it out. Further to the...

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