OROYA FEVER 



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FIG. 53, Above, a typical " quebrada " or canyon on the west slope of the Andes 

 where Oroya fever abounds. Below, the famous " Oroya Fever Bridge " on Peruvian 

 Central Railway where hundreds of lives were lost Jrom Oroya fever. (Photos 

 kindly lent by Harvard School of Tropical Medicine, previously published by 

 Strong et aU) 



