92 



up between the inoculations in Sept. 1921, from the Jaegersborg 

 camp and from newly-enrolled soldiers. 



Neither in the Vaerlose nor the Jaegersborg camp had there 

 been influenza during those months the men examined in Sep- 

 tember had been in their respective stations. Only a few sol- 

 diers had reported sick of other catarrhal infections. 



The problem as to how far every healthy carrier of 

 Pfeiffer's bacillus is to be looked upon as a carrier who has 

 never got rid of the bacillus since an attack of influenza, can 

 in all probability be answered in the negative from the ex- 

 perience gained in the military camps. That between May 

 and September 1921 Pfeiffer's bacillus m'ust have extended in 

 distribution among the recruits in the Jaegersborg camp without 

 in every instance having been passed on from an influenza 

 case, can hardly be doubted. 



With the object of discovering the numerical connection 

 between past influenza and the occurrence of Pfeiffer's bacillus, 

 each man in some of the batches of soldiers examined was 

 cpiestioned about previous influenza („Spanish disease"). 



In the case of the soldiers examined on 3. and 1. IX. 

 18. the influenza could at the most, only date a month back; 

 in those examined on 24. and 25. I. 19, 5 months had usually 

 elapsed: in those examined on 5. III. 19. the influenza infec- 

 tion took place 1 — 7 months previously; and in the two next 

 batches (13. VIII and 10. IX. 19.) it dated 3/ 4 _l year back. 

 Lastly, which of the soldiers examined on 6. III. 20., had had 

 influenza in the epidemic of 1920, was noted. 



In the following table the occurrence of Pfeiffer's bacillus is 

 recorded separately in those soldiers who said they had had 

 influenza and in the remainder. 



