46 
TYPHOID FEVER IH DISTRICT OF COLUMBIA. 
The occurrence of deaths from typhoid fever in the District of 
Columbia, as reported to the health officer from May 1 to December 
31, 1906, was as follows: 
May — 
1 to 15 3 
16 to 31 7 
June — 
ltol5 4 
16 to 30 5 
July — 
1 to 15 9 
16 to 31 12 
August — 
1 to 15 10 
16 to 31 22 
September — 
1 to 15 15 
16 to 30 6 
October — 
ltol5 10 
16 to 31 17 
November — 
1 to 15 10 
16 to 30 8 
December — 
1 to 15 1 
16 to 31 3 
A comparison of this table with the one above, showing the progress 
of the disease based on the date of onset, shows that the typhoid 
fever death rate does not indicate in detail the progress of the 
causes of the disease chronologically and emphasizes the importance 
in the study of a typhoid fever situation of determining the rate 
of occurrence of cases by date of onset of illness. 
SANITARY CONDITION OF RESIDENCES. 
The general sanitary condition of the residences at which patients 
had lived when the infection probably was contracted were consid- 
ered under four heads: ^^Good,” Fairly good,’’ Rather bad,” 
and ^^Bad.” Under ^^Good” are included residences at which all 
the conditions such as structure of house, state of cleanliness, venti- 
lation, plumbing, etc., were good; under “Fairly good” residences 
at which most of the conditions were good, but with one or more 
somewhat faulty — ^for example, a residence with everything in good 
condition except for a somewhat damp and rather poorly ventilated 
cellar or basement would be classed as “Fairly good;” under “ Rather 
bad” were included those with one condition faulty or several some- 
what faulty; while under “Bad” were included those with one or 
more very faulty or with all the conditions somewhat faulty. 
The sanitary conditions of the residences were as follows: 
Good 253 
Fairly good 243 
Rather bad 158 
Bad 92 
Not determined 1 
Total 747 
These figures show that the disease certainly did not prevail to 
any unusual extent among persons living under poor sanitary con- 
ditions. On the contrary, it seemed to be more prevalent among 
persons living in residences of the better class. 
