CHAPTER VI 



PYOGENIC BACTERIA, PYEMIA, SAPREMIA, SEPTI- 

 CEMIA, INFECTIOUS DISEASES 



PYOGENIC BACTERIA 



WHILE almost any germ may produce suppuration 

 under certain conditions, there are certain forms which 

 are particularly prone to cause pus formation. These 

 are termed pyogenic bacteria. The more important 

 pyogenic bacteria are the following: 



Staphylococcus Pyogenes Aureus (the Golden-yellow 

 Coccus). This is a facultative anaerobic germ, found 

 in soil, dust, water, the alimentary canal, on and hi the 

 superficial layers of the skin, especially of the axilla and 

 perineum. It is the cause of 75 per cent, of acute 

 abscesses, as boils, felons, etc. It is also the cause of 

 certain forms of osteomyelitis and of pyemia. 



Staphylococcus Pyogenes Albus (White Coccus). 

 A Staphylococcus more feeble in power than the yellow 

 coccus. A variety of the white coccus, called the 

 Staphylococcus epidermidis albus, found constantly on 

 the skin and in its deep layers, is the usual cause of 

 stitch abscess. 



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