﻿236 



The Philippine Jowncd of Science 



1914 



tion percentage among the Chinese and Filipinos must be that 

 the former are exposed less than the latter to the sources of 

 infection with intestinal helminthic parasites. It is to be noted 

 in this connection (1) that Chinese use chopsticks when eating, 

 whereas lower class Filipinos use their fingers; (2) that Chinese 

 drink a great deal of tea (boiled water), whereas Filipinos 

 do not; (3) that Chinese eat less uncooked food than Filipinos; 

 (4) that many of the Chinese were shopkeepers or clerks, whereas 

 most of the Filipinos were laborers, and consequently the former 

 were less liable to soil infection than the latter. 



Table I. — Summary. 



Examinations and infections. 



Persons examined 



Persons infected 



Persons infected with — 



TTnchuris 



Ascaris - __ 



Hookworm 



Strongyloides _ 



Oxyuris -.- 



Titnia 



Clonorchis 



Hymenolepia nana 



Schistosoma japonicum 



Total 



Number. 



Per cent. 



7.843 





5,421 



69.1 



3,690 



47.1 



3.211 



40.9 



1,787 



22.2 



65 



0.8 



5T 



0.7 



57 



0.7 



8 



0.1 



4 



0.05 



3 



0.05 



8.832 



112.60 



Table II. — Race distribution. 



Examinations and infections. 





Race. 





Total. 



Filipinos. Chinese. 



1 



Number. 



Per cent.j Number. 



Per cent. 



Number. 



Per cent. 



Examined 



6.416 

 4,940 





1.427 

 481 





7,843 

 6,421 





Positive - 



Trichuris 



Ascaris - - 



Hookworm 



77.0 



33.7 



69.1 



3,447 

 2,946 

 1,643 

 60 

 55 

 53 

 10 



53.7 

 45.9 

 24.0 

 0.9 

 0.9 

 0.8 

 0.2 



243 

 265 

 94 

 5 

 2 

 4 

 5 



17.0 

 18.6 

 6.6 

 0.4 

 0.1 

 0.3 

 0.4 



3,690 

 3,211 

 1,737 

 65 

 57 

 67 

 15 



47.1 

 40.9 

 22.5 

 0.8 

 0.7 

 0.7 

 0.2 



Oxyuris 



Txnia 



Miscellaneous 



Total infections 



8,214 



128.0 j 618 



43.3 



8,832 



112.6 



