186 



GARRISON AND LLAMAS. 



192 were infected, or 85 per cent — while of the remaining 158 children, 

 150, or 95 per cent, were infected. The women gave 291 infections with 

 intestinal worms or 128 infections per 100 examined; while the children 

 gave 242 infections or 153 per 100. 



The infections with each parasite found were as follows : 



Trichuris 



Ascaris 



Hookworms 



Htrongyloidcs 



Oxyuris 



Tcenia 



A comparison of the frequency of these parasites in men from all 

 over the Islands and women and children in Manila is shown in the 

 following table : 



nfections. 



Per cent 



.300 



87.00 



182 



53.22 



46 



13.45 



2 



.6 



2 



.6 



1 



.3 



Animal parasites. 



Trichuris 



Ascaris 



Hookworms. 

 Strongyloides 



Oxyuris 



Tu'nia 



Hymenolcpis . 



Men. 



Per cent. 



.59. 00 



26.00 



52.00 



3.00 



0.8 



0.7 



0.1 



Women. 



Per cent. 

 84.00 

 .51.00 

 15. 00 



















Children. 



Per cent. 



92.00 



56.00 



11.00 







1.33 

 .66 

 



A higher rate of infection with Ascaris and Trichuris among women 

 and children than among men was anticipated from the relative frequency 

 of these worms in the two sexes and among different ages in other 

 localities. The frequency of hookworms is strikingly lower than was 

 found among the Bilibid prisoners. 



The infections with the other parasites are too few for purposes of 

 comparison. In view of the fact that the greater frequency of liymeno- 

 lepis among children than among adults has been recorded by several 

 authors, it is worthy of note that no infections with the dwarf tapeworm 

 were encountered among the 158 children examined, although it was 

 found in about 1 per cent of the adult males examined at Bilibid Prison. 



