WOUND INFECTION n 



the first or cause so little disturbance as to be unnoticed at the 

 time, but sooner or later result in a local or remotely situated 

 lesion or lesions. Frequently these are recognized as distinct 

 diseases although in some cases, such as scirrhous cord, the 

 origin is easily traced to 

 an operation where infec- ^"•'•' 

 tion was possible. This 

 group of wound infec- 

 tion lesions, such as 

 scirrhous cord, botryo- 

 mycosis, infectious cel- 

 lulitis of cattle and sheep 

 and still other disorders 

 may not appear to be 

 dependent upon wound 

 infection ; but the results 

 of recent investigations 

 suggest this as their pri- 

 mary cause. These affec- 

 tions will be treated sep- 

 a r a t e I y in subsequent 

 paragraphs but their re- 

 lation to wound infec- 

 tion renders them worthy 

 of note in this connec- 

 tion. 



In wound infection, 

 the invading organism 

 is not always of the same 

 species. It is because of 

 the fact that wound in- 

 fection lesions of a similar character anatomically may 



P'iG. r. Wound infection. Purulent in- 

 filtration from the wall of an abscess in 

 a horse showing the infiltration of the 

 intermuscular tissue with pus corpuscles. 

 Drawing m.ade with i inch ocular and 

 2-S objective. 



be 



caused by a number of diflferent bacteria that they cannot be 

 classed among the specific infectious diseases. It is observed 

 further, that in many of these lesions two or more species have 

 been responsible for the results. There is no symptom, or 

 manifestation of tissue changes, by which one can determine 



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