RELAPSING FEVER 



I 9 7 



very similar to 0. moubata 0. savignyi has been shown 

 to occur in India. 



In parts of Persia Argas persicus, the " miana bug," has 

 long been believed to cause severe fever, and similar 

 consequences are thought to follow bites of A. turcata 

 in Mexico and Central America. 



Mackie reports an epidemic of relapsing fever in a school 

 in India, in which he believed the transmitting agent was 

 Pedicnlus vestimentonnn (fig. 55). The disease was much 

 more prevalent in the boys who were infected with 



FIG. 55. Pediculus vestimentorum. 



pediculi than in the girls who were less so. Fourteen per 

 cent, of the lice from the boys were infected, and 2*7 per 

 cent, from the girls. Spirochaetes were found in the 

 secretion expressed from the mouths of the infected 

 pediculi. 



Mention may be made of certain other Spirochaetes, 

 such as S. vincenti, found in certain forms of gangrenous 

 inflammation ; S. paliida, described by Schaudinn in 

 syphilitic lesions and believed to be the cause of this 

 disease ; S. pertennis found by Castellani in yaws, and 



