to to 
Fowl Typhoid and Fowl Cholera 
43 
ma> run foi an undetei mined time, the bird either succumbing 
iecovering as an individual to enter into the carrier stage, 
are probably factors in the eventual recurrence of the disease 
break has seemingly worn itself out. 
or apparently 
Such carriers 
after the out- 
A composite temperature graph of the types of fowl typhoid cases is pre- 
The mortality attending avian typhoid varies according to conditions 
which are never constant. As an index to the mortality, Table IV lists the 
outbreaks with which this department came in contact during the studies 
on this subject. This table involves a total of 4,983 birds, the mortality 
before vaccination being 1,292 birds or 26 per cent; after vaccination, 137 
11C dn °' S fl ° Ck Per Cent; the total re P res enting a mortality of 1,432 birds 
or 29 flock per cent. 
Table IV 
Mortality in Fowl Typhoid 
3 
1 
2 
3 
4. 
5. 
6 . 
i 
8 
9 
o 
Flock Number 
] 
^oss Before 
J aocination 
Loss After 
Vaccination 
Total Loss 
Flock 
Total 
Loss 
Per 
Cent 
Loss 
Flock 
Total 
Loss 
Per 
Cent 
Loss 
Flock 
T otal 
Loss 
Per 
Cent 
Loss 
34 
4 
12 
30 
3 
10 
34 
7 
21 
35 
5 
14 
30 
0 
0 
35 
5 
14 
126 
42 
33 
84 
1 
1 
126 
43 
34 
32 
8 
25 
24 
0 
0 
32 
8 
25 
40 
5 
12 
35 
0 
0 
40 
5 
12 
19 
7 
37 
12 
0 
0 
19 
7 
37 
26 
9 
O 
12 
23 
0 
0 
26 
3 
12 
15 
4 
27 
11 
0 
0 
15 
4 
27 
111 
11 
10 
100 
0 
0 
111 
11 
10 
64 
4 
6 
60 
0 
0 
64 
4 
6 
93 
35 
38 
58 
2 
3 
93 
37 
40 
23 
1 
4 
22 
6 
27 
23 
7 
30 
27 
i 
26 
20 
2 
10 
27 
9 
33 
42 
7 
17 
35 
0 
0 
42 
7 
17 
112 
12 
ii 
100 
0 
0 
112 
12 
11 
29 
4 
14 
25 
1 
4 
29 
5 
17 
100 
22 
22 
78 
7 
9 
100 
29 
29 
73 
25 
34 
48 
0 
0 
73 
25 
34 
137 
69 
50 
68 
0 
0 
137 
69 
50 
69 
20 
29 
49 
2 
4 
69 
22 
32 
94 
25 
27 
64 
5 
8 
94 
30 
32 
20 
5 
25 
15 
0 
0 
20 
5 
25 
470 
12 
3 
458 
2 
4 
470 
14 
3 
177 
77 
44 
100 
0 
0 
177 
77 
44 
64 
40 
63 
24 
1 
4 
64 
41 
64 
80 
61 
76 
19 
3 
16 
80 
64 
80 
69 
20 
29 
49 
4 
8 
69 
24 
35 
165 
82 
50 
83 
3 
4 
165 
85 
52 
135 
35 
26 
100 
1 
1 
135 
36 
27 
123 
75 
61 
48 
4 
8 
123 
79 
64 
95 
40 
42 
55 
2 
4 
95 
42 
45 
75 
20 
27 
55 
3 
5 
75 
23 
31 
39 
1 
3 
38 
0 
0 
39 
1 
3 
66 
1 
2 
65 
0 
0 
66 
1 
2 
53 
1 
2 
52 
0 
0 
53 
1 
2 
110 
40 
36 
60 
0 
0 
110 
40 
36 
53 
20 
38 
33 
0 
0 
53 
20 
38 
900 
8 
1 
892 
32 
4 
900 
40 
4 
