IMMUNITY 79 



Plague. ^Vaccines have been tried for immunization. 



Tuberculosis. — Neither therapeutically nor for immuni- 

 zation have either serum or vaccine yielded satisfactory 

 results. 



Pneumonia. — Serum therapeutically has apparently 

 been of value in certain types of cases. Vaccines have not 

 yielded satisfactory results. 



Streptococcus Infections. — Therapeutic results either 

 with serum or vaccines have been unsatisfactory. 



Gonococcus Infections. — Vaccines, therapeutically, use- 

 ful in certain types of infection. (See page 118.) 



Boils and Other Staphylococcus Infections. — Vaccines, 

 therapeutically, have been of value in certain cases. 



Whooping-cough. — Vaccines are now being tried thera- 

 peutically. Results somewhat encouraging. 



Rabies. — Pasteur's method of treatment by vaccines is 

 undoubtedly of great value. The vaccine consists of an 

 emulsion in salt solution of spinal cord from a rabbit dead 

 of artificially inoculated rabies. The cord is dried for vary- 

 ing periods and the injections are made daily, beginning 

 with a cord dried fourteen days and changing to a stronger 

 cord (dried less), so that finally the injected material con- 

 sists of a cord dried only three days. 



Influenza. — Neither serum nor vaccines have given satis' 

 factory results either therapeutically or for immunization. 



