I08 MEDICAL BACTERIOLOGY 



During the course of typhoid fever bacilli lodge in the spleen, bone-marrow, 

 gall-bladder and occasionally in other parts; some may survive after subsidence 

 of the fever and remain dormant for months or years and then cause an acute, 

 localized, inflammatory or suppurative condition. 



Occasionally the typhoid bacillus has been found the exciting cause of chole- 

 cystitis, meningitis and pneumonia without the previous occurrence of typhoid 

 fever. 



Apparently, typhoid fever and typhoid infections occur only in man. When 

 virulent typhoid bacilli are injected into lower animals, septicemia and death 

 follow without the manifestations of typhoid fever observed in man. 



