﻿IX, B, 3 Willets: Widal Reactions Aviong Filipinos 255 



Table I. — Reactions in 1,9 of the 300 cases examined — Continued. 



No. 



Original reactions. 



Check reactions. 



Dilution 1 to 40. 



Dilution 1 to 80. 



dilution 1 to 40. 



Minutes. 



Result. 



Minutes. 



Result. 



Minutes. 



Result. 



24 



60 

 45 

 40 

 60 

 60 

 30 

 60 

 60 

 60 

 60 

 60 

 60 

 60 

 60 

 60 

 60 

 45 

 60 

 60 

 60 

 60 

 60 

 60 

 60 

 60 

 30 



P 

 C 

 C 

 P 

 P 

 C 

 P 

 P 

 P 

 P 

 C 

 C 

 C 

 P 

 C 

 P 

 C 

 P 

 P 

 P 

 P 

 P 

 C 

 C 

 C 

 C 



90 

 90 

 60 

 90 

 90 

 60 

 90 

 90 

 90 

 90 

 90 

 90 

 90 

 90 

 90 

 90 

 60 

 90 

 90 

 90 

 90 

 90 

 90 

 90 

 90 

 30 



A 

 C 



A 

 P 

 C 

 P 

 P 

 P 

 A 

 C 

 C 

 P 

 A 

 P 

 P 

 C 

 A 

 A 

 A 

 P 

 A 

 C 

 C 

 P 

 C 



60 

 30 



A 

 C 



25 



26. 



27 . . 



90 

 90 

 30 

 90 

 60 

 60 

 60 



P 

 A 

 C 

 P 

 P 

 A 

 P 



28 



29 



30 



31 



32 . . 



33 . . 



34 



35 . 







36 





37 





38 





39 _-- 







40 







41 . . 







42 







43 







44 







45 







46 - 







47 







48 







49 . 



i 





1 



In order to determine the probable significance of the complete 

 reactions, the cases diagnosed as typhoid fever in the hospital 

 during the year were investigated. It was found that the clinical 

 diagnosis was verified by positive blood cultures in 8 cases; by 

 anatomical lesions at autopsy in 9 cases; and by both positive 

 blood cultures and anatomical lesions at autopsy in 5 cases. 

 Widal reactions, performed in a manner similar to those upon 

 the healthy adults, excepting that the serum was quite fresh, 

 the dilution 1 to 40 or 1 to 50, and the time limit forty or fifty 

 minutes, were positive in 20, or 90.9 per cent, of these 22 cases 

 as shown in Table II. 



