57 
sion to the hospital of cases considered as having* contracted the infec- 
tion in the District of Columbia was as follows : 
Cases. 
Within five clays after onset of illness 143 
Within ten clays after onset of illness 57 
Within fifteen days after onset of illness 12 
Within twenty days after onset of illness 3 
Within twenty-five clays after onset of illness 3 
Within thirty clays after cmset of illness 1 
Total 219 
Of the llT cases considered as undoubtedly having contracted the 
infection out of the District of Columbia, 78 were treated at hos- 
pitals; and of the 30 which were considered as almost certainly hav- 
ing contracted the infection out of the District of Columbia, 13 were 
treated at hospitals. Of these 91 imported cases treated at hospitals, 
67 were taken from places out of the District of Columbia directly 
to hospitals for treatment and 24 were taken to hospitals after being- 
treated at private re-idences in tlie District of Columbia as follows: 
At private residences : Cases. 
One day ; 7 
Two days 2 
Three clays 2 
Five days 2 
Six days 1 
Seven days 2 
Eight clays ^ 2 
Nine days 2 
Ten days 1 
Twelve clays^ 2 
Twenty-four clays 1 
Total 24 
This year, as in 1906, the good percentage of cases, particularly of 
the imported cases, treated at hospitals was encouraging, as the facil- 
ities for preventing the spread of infection are usually much better 
in hospitals than at private residences. 
Of the 359 cases treated at private residences, 90 were attended by 
professional nurses. The treatment of stools and urine Avith disin- 
fectants was considered efficient for 128 cases, inefficient for 180, of 
doubtful efficiency for 48, and the method not ascertained for 3. 
Of the 180 patients whose stools and urine were inefficiently treated 
no attempt at disinfection Avas made for 65 ; the treatment Avas ineffi- 
cient on account of the small quantity of disinfectant used for 58; 
and on account of a shortness of time of exposure of excreta to dis- 
infectant for 57. For 48 of the patients the treatment of the stools 
and urine was considered of doubtful,efficiency because the agent used 
for accomplishing tlje disinfection was of doubtful value. 
