OTHER IMPORTANT PATHOGENIC MICRO-ORGANISMS 169 



phylaxis is similar to that discussed under Typhoid 

 Bacillus. 



Pneumobacillus of Friedlander. A short bacillus, 

 often occurring in pairs or chains of four, capsulated, 

 and Gram-negative. Found in certain cases of pneu- 

 monia and pleurisy. Prophylaxis is similar to that dis- 

 cussed under the Pneumococcus. 



Fig. 52. Friedlander's pneumobacillus. Welch's capsule stain; 

 X 1100 (Jordan). 



Paratyphoid Bacilli. Similar to typhoid bacilli and 

 colon bacilli, and producing infections in man resembling 

 typhoid fever or, at times, symptoms of epidemic meat- 

 poisoning. Prophylaxis is discussed under Typhoid 

 Bacillus and under Bacterial Food Poisoning. 



Influenza Bacillus (Grip Bacillus). A very small, 

 moderately thick bacillus, growing only on media contain- 

 ing blood (hence spoken of as a "hemophilic" bacillus) and 

 occurring chiefly in inflammations of the respiratory pass- 

 ages. Experience has shown that a large proportion of 

 cases called "influenza" or "grip" by the clinicians are 



