CHAPTER 17 



Pathogenic Bacteria 



THE GRAM POSITIVE COCCI 



Pneumococci 



Streptococci 



Micrococci 



THE GRAM NEGATIVE COCCI 



Neisseria gonorrheae 

 Neisseria meningitidis 



THE GRAM POSITIVE RODS 



Corynebacterium diphtheriae 

 Mycohacieriiim tuberculosis 

 Bacillus anthracis 

 Clostridium felani 

 Clostridium f)otulinum 



THE GRAM NEGATIVE RODS 



Salmonella typhosa 

 Shigella dysenteriae 



THE SPIRALS 



Treponema pallidum 



Although some disease-producing bacteria have been mentioned 

 by weaving their names into the text of the book, it is appropriate 

 to devote one chapter to a brief discussion of some prominent 

 pathogenic bacteria. Of necessity, many important organisms must 

 be omitted, and the finer points relative to the bacteria that are 

 discussed will be left out. 



THE GRAM POSITIVE COCCI 



PNEUMOCOCCI 



Non-motile oval or spherical forms about 0.5 to 1.25 microns 

 in size, typically in pairs but occasionally in short chains, with the 



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