HISTORY OF THE CONTROL OF YELLOW FEVER 489 



was then investigated. No animal was susceptible to yellow 

 fever, so Major Reed could not experiment on animals. Dr. 

 Carroll permitted himself to be bitten by a mosquito known as 

 the Aedes or Stegomyia mosquito which was suspected of trans- 

 mitting the fever. He contracted yellow fever but recovered. 

 A mosquito accidentally alighted on Dr. Lazear's hand and he 

 permitted it to bite him. He died September 25, 1900, one of 

 the first martyrs to the yellow fever investigation. 



Major Reed then decided to set up controlled experiments to 

 prove definitely whether or not the mosquito carried the disease. 

 He wanted to segregate a group of men for a number of weeks 

 from all contact with yellow fever to make sure they had not 

 already contracted it before mosquitoes bit them. He asked fcr 



1600 

 1400 

 IftOO 



1000 



aoo 



600 



400 

 200 



Deaths in 

 Itavanoc 

 from 



1675 880|065 1890 109? 1*00 U905 I9IO 



A m. Museum of Nat. Hist. 

 Due to the control of the mosquito, malaria has practically disappeared from Harana. 



volunteers for the experiment. Private Kissinger of Ohio and 

 John J. Moran, a civilian clerk, offered themselves. Major Reed 

 WH. PITZ. AD. BIO. 32 



