New Aspect* oí Yellow I ever Etiology 



Arising from I lu- c»|ici ininitiil finding! ot t In- Iiii-.I (Inn >i-iir» . , 



Read ,ii the ; i ■ i. annual meeting <>i the American Publli 1 1 •-<• i • !■ Aieoclatlon, 

 held •>! Washington, Oct. ■»«. 1903 



in the lighl ni' modern research ello ■ ■ < I bow i » < con idered 



¡m a disease produced, in individuals belonging in certain human rac< , by 

 a two-hosl microscopic, perhaps ultra-microscopic germ endopara it* of 

 the female of a particular specie of mosquito thi Slegomyia fa data 

 i'\ heobald), 



This germ pursues ii para itic 1 a tence in the body of the infected 

 srtegomyia during •■ period oi 59 day as 1 periment* bavi [■>•> cd, and 

 probably, under ordinary circurn tancci till tin death ol ii mosqu to 

 In order however thai ii may complete its life ■ ■ cure Hi': 



perpetuation of it species and And ¡1 ■> . into the body of other healthy 

 ary thai it hould penetrate through the bite of the 

 infected in ect, into the body of a persoi ho is liable to und rgo 1 n attack 

 oí yellow fe 



After parting from its mosquito-hosl th< germ appap 

 h certain evolutions in th< body of the non immune and after the 

 lapse of from three to fivi daj • < a ruli bring about the atta 



'.Vli;ji the character of the* 1 olution are can only l"- turmi 

 do kiis bile the sojo M of Un- parasite in the body of the 



infect d stego dm two 



perceptibly affecting thi 01 or the functional acti 



bo 1 i' pre ence in the human hosl reveah ii elf 'inly dm 

 number «i days disappearing apparently by the end ")' the 

 flu- dangerous illne 1 which ii occasion , withoul 1 trace 



¡) ReprínM (ron í'fn Journal 0) t)u American Medical Ittoeiat ■ 



In I,. I: l-. 

 FarmaceuUca </' <■> Isla •'• ' <-'<" I III, Oet, 1003, p. 477. 



