2o6 INFECTIOUS AND PARASITIC DISEASES. 



Syphilis (Lues). 



(a) Cause: Spirochceta pallidce {?). 



(b) Localization: Practically everywhere in second 



and third stages; in first stage (primary) 

 the initial lesion (chancer) is usually 

 upon the genitals; extra-genital chancers, 

 however, may be found upon any cutan- 

 eous surface; also upon lips, tongue, ton- 

 sils, eye-lids, or rectum. 



(c) Entry: Through abrasions of skin or mucous 



membrane ; through spermatozoan ; through 

 ovum; placenta. 



(d) Exit: From discharging lesions, and with blood 



when drawn. 



(e) Contracted: Usually through illicit intercourse, 



when primary lesion is found upon gen- 

 ital organs ; may be innocently contracted 

 through kissing, from infected handker- 

 chiefs, pipes, dishes, etc.; by pricking 

 finger during operation upon a syphilitic, 

 or through examination during confine- 

 ment. When innocently contracted is 

 called syphilis insontium to distinguish 

 it from venereal syphilis, which carries 

 with it an implied stigma. 



(f) Disinfection : Boiling water or steam ; usual chem- 



ical disinfectants. 



(g) Prophylaxis: Abstinence from irregular relations ; 



