308 



CHAMBERLAIN. 



The figures in Table V were obtained from the reports of the Surgeon General 

 of the Army, the records of the chief surgeon, Philippines Division, the records 

 of this Board, and in a few instances from personal knowledge of members of 

 the Board. Tlie table does not pretend to be complete but it is sufficient to 

 indicate how widely spread throughout the Archipelago is the infection with 

 typhoid. The accompanying "spot map" graphically indicates the distribution. 

 In considering Table V it must be borne in mind that the localities mentioned 

 represent a majority of the places in the Islands where there are competent 

 observers or laboratory facilities. 



The Bureau of Health mortality statistics for the provinces cover all parts of 

 the Archipelago except Mindanao, Jolo, and adjacent small islands. These reports 

 show typhoid to be an extremely common cause of death in all of the important 

 islands, the mortality rate in some provinces for certain years ranging from 50 

 to more than 160 per 100,000 of population. We have not gone into these 

 figures in more detail because of the uncertainty which attaches to the diagnosis 

 of typhoid, or any other disease for that matter, in the provincial reports. 



WIDAL EXAMINATIONS ON THE BLOOD OF HEALTHY ADULT NATIVES. 



With a view to determining how large a proportion of healthy natives 

 might show the influence of antecedent typhoid, as evidenced by a positive 

 Widal reaction, the Board has obtained the blood of 307 adult male Fili- 

 pinos and the results are shown in Table VI. These examinations were 

 made in 1910 and 1911. 



Table VI. — Widal examinations on the blood of healthy Filipino adults. 



station or town. 



Island. 



Race or 

 tribe. 



Num- 

 ber. 



Widal, dilutions 

 about 1 to 20. 



Widal, dilutions 

 about 1 to 50. 



Positive. 



Negative. 



Positive. 



Negative. 



Parang . _ . 



Mindanao 



do 



Moro 



Filipino 



Visayan „. 

 ..do 



12 

 52 

 12 

 12 

 12 

 12 

 12 

 12 

 12 

 6 

 12 

 36 

 40 

 20 

 12 

 13 

 20 



1 

 4 

 

 

 

 

 2 

 2 

 

 

 1 

 4 

 

 2 

 4 

 

 



11 

 48 

 12 

 12 

 12 

 12 

 10 

 10 

 12 



6 

 11 

 32 

 40 

 18 



8 

 13 

 20 



1 



4 





 6 



Parang _ 



Camp Wilhelm 



Leyte 



do - 







('Otabato 



Mindanao.— 



Luzon 



. do 



Ilocano -.- 

 Visayan _.. 

 Ilocano ... 

 Visayan ... 



Moro 



. do . 







Camp Wallace 



Regan Barracks -_ 





. ■, 1 





 



2 

 2 



Camp Connell 



Isabela 



Samar 



Basilan 



. ._do 



Bojelebung 







Bumpus 



Leyte 



Corregidor — 



Luzon 



do . 



Visayan ... 

 Macabebe . 

 Visayan ___ 



Igorot 



Cagayan... 

 Ilocano _._ 

 Visayan ... 





 2 



; 1 



2 



Fort Mills 



Camp Gregg _ 



Camp Hay . 





 2 



2 

 2 



Camp Hayt 



Samar 



Luzon -._^... 

 Corregidor __ 



Fort Mills .... 



Total 











307 



20 

 6.5 



287 

 93.5 



9 

 2.9 



11 



Percentage ._ 

















Reactions in 1 to 50 dilution were done only on those cases which proved postive in 

 a t« 20 dilution. 



