8 WOUND INFECTION 



the specificity of the exciting cause. If this is done, it 

 requires a bacteriological examination. 



Another class of diseases that are sometimes called 

 wound infections should be mentioned, namely, those specific 

 diseases, such as tetanus and symptomatic anthrax, where the 

 virus is supposed always to be introduced through a wound 

 either in the skin or mucous membranes. 



Bacteria causing wound infection. A large number of 

 species of bacteria and a few fungi are included among the 



Fig. 2. Micrococcus pyogenes aureus. Drawing from a cover- 

 glass preparation of a bouillon culture. Highly magnified. 



organisms which are known to produce wound infections in 

 animals. Usually, however, the forms encountered are micro- 

 cocci, especially those belonging to the staphylococcus group, 

 streptococci, Bacillus pyogenes (Bacillus pyogenes bovis 

 (Grips) Bacillus pyogenes suis (Kiinnemann) ), a few other 

 bacilli, especially those belonging to the colon group and a 

 few species of the genus pseudomonas. Fungi and protozoa 



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