17 
From the above it is seen that the higher rate of total infection 
found among female patients was due almost wholly to the higher 
percentage of whipworm infections which they presented. 
While a higher rate of total infection was found among females than 
among males for the whole 3,457 persons examined, excessive helmin- 
thiasis in the females was not present at the Government hospital 
nor at the orphanage, but was confined entirely to the patients exam- 
ined at the Connecticut hospital. 
Among the 2,324 patients examined at the Government hospital 
the frequency of infection in males and in females was as follows: 
Examined. 
Infections. 
Per 100 
persons. 
Males 
1,737 
587 
186 
10.71 
Females 
39 
6.64 
This greater frequency of intestinal worms among men than among 
women at St. Elizabeth holds for both whites and negroes: 
Examined. 
Infections. 
Per 100 
persons. 
Whites: 
Males 
1,494 
150 
10.04 
Females 
371 
18 
4.85 
Negroes: 
Males 
243 
36 
14.81 
Females 
216 
21 
9.72 
If we select the patients admitted to the Government hospital from 
the District of Columbia, thereby restricting our cases to civilians 
and eliminating certain males who presented a high degree of helmin- 
thiasis apparently due to a history of military or of tropical life (see 
p. 49) we find the male rate of total infection still slightly in excess 
of the female rate : 
Examined. 
Infections. 
Per 100 
persons. 
Males 
576 
50 
8 68 
Females 
548 
34 
6.20 
* 
Ascaris lumbricoides is the only parasite found at the Government 
hospital which gave a higher percentage of infection among females 
in that institution, as appears from the following. 
32004 — No. 28—06 2 
