Although this tick has been incriminated as a vector of 

 several pathogens of bovine diseases, it cannot be ascertained 

 from the literature that they are yet known to play ^^ ^^ 

 role in the transmission of these diseases m nature. The sa-ne 

 is true for other diseases of horses, goats, sheep, and dogs, 

 listed below. 



Experimental (Human Diseases ^ Syndromes) 



Tick paralysis (venom or toxin): This syndrome can be in- 

 due ed-ire^^SHfe^al animals by injection of the ticks' eggs 

 and ovaries. 



Yellow fever: Although the virus remains viable in this 

 tick for so mTTT^, it is not transmitted by bitmg. 



Scrub typhus : Rickettsia tsutsu<^amushi is not transmitted 

 by the kennel tick. 



fever- Coxlella burnetii has been found naturally in- 

 fecting-TTB'. sl^^^^IK^s and experimental transmission has been 

 deSnstrlted but apparen tly no cases of Q fever xn man attri- 

 butable to this tick have been reported. 



North Queensland tick typhus : It has been ^^^ested, on 

 epideTSr^ gical groun dr^^f^t R. s. sanguineus might poa- 

 sibly be a vector of this rickettsia. 



/■"Sao Paulo or Minas Gerais typhus ": Rockry Mountain spotted 

 fever; cf. above_./ 



Louse - borne typhus : This tick does not transmit Rickettsia 

 prowazeki . 



Relapsing fevers : Spirochetes ^^^^J^^^^^l^ ^' 

 tran smitted to i^^ pigs and man by the bite of this tick, 



^suc'sSS and only exceptional trans^issloTTSflTEersica has 



been obtained. 



_ 714 - 



