Fowl Typhoid and Fowl Cholera 
25 
Tlie disease in Noi tli Carolina appears to be one of the late winter and 
early spring. Table III shows the date of inception as determined in the 
field investigations of this department: 
Table III 
Seasonal Occurrence of Fowl Typhoid in North Carolina 
Month 
January .. 
February 
March .... 
April . 
May . 
June . 
July . 
August ..... 
September 
October ... 
November 
December 
No. of Outbreaks 
. 5 
. 10 
. 9 
. 11 
. 10 
. 0 
. 1 
. 1 
. 1 
. 3 
. 2 
. 3 
Such findings concur with the observations of Truche (31) as to the 
seasonal occurrence of the disease in France, while teHennepe (33) reports 
the disease as most prevalent in the spring and early season in Holland. 
An outbreak of the disease in the field usually has pronounced features. 
In North Carolina the disease seems to be restricted mostly to adults, al- 
F4RMC ~ 3 /'F/SFA//C 
/.OSS-29 oorof/oo&/FDS 
Boys of farm C e/s ft w/tb boys of Farm Ft. 
Fogs from farm fj so/d fo farm Cpr/or fo epidemics. 
/Vo birds or eygs sofd or interchanged between farms. 
FIG. 11.—FIELD STUDY OF FOWL TYPHOID 
though two outbreaks attacked half-grown chicks, and in one, young turkeys. 
Sometimes young birds fully feathered out are susceptible. Some of the out¬ 
breaks investigated from this department showed very high mortality among 
the adults, with no mortality occurring in the young chicks from the disease, 
though the young chicks ranged on the infected ground, and were subjected 
to such conditions as would ordinarily produce the disease in a susceptible 
