OPSONIC INDEX IN RECOVERY FOR INFECTION 



55 



To further study the relation of the opsonic index to the 

 course of the disease, the indices of all patients who had received 

 no vaccine were tabulated with regard to the day of the disease, 

 and an average opsonic index for each day was determined. 



TABLE SHOWING THE: OPSONIC INDEX AT THE TIME OF ADMISSION, BEFORE KILLED 

 CULTURES WERE INJECTED, AND THE DAY OF THE DISEASE. 



Day of Disease. 



Average. 



The composite chart indicates that erysipelas causes an in- 

 crease of the opsonic index which reaches its maximum about the 

 third day of the disease, and is followed by a gradual fall. The 

 subsequent course of the chart represents, in very large part, ob- 

 servations made upon recurrent, migratory, and complicated 

 cases. Ruediger found that the index was high during an attack 

 of erysipelas. 



l.o 



I." 



OLA 



10 - n 



CHART III. To show the average opsonic index and the day of disease before killed 

 cultures of streptococci were injected. 



It is to be noted that the determinations made and repre- 

 sented in the last curve do not represent the index in any one case. 



