|
Age
|
No. of Sera Tested
|
No. of Positive Sera
|
aIFAT serum dilution endpoint
|
Positivity rate (%)
|
bAPI
|
|---|
| | | |
< 1:32
|
≥ 1:32
|
1:64
|
1:128
|
1:256
|
1:512
|
1:1024
|
1:2048
| | |
|---|
|
0 - 9
|
299
|
7
|
292
|
3
|
4
|
0
|
0
|
0
|
0
|
0
|
2.34
|
0
|
|
10 - 19
|
604
|
7
|
597
|
4
|
3
|
0
|
0
|
0
|
0
|
0
|
1.16
|
0.16
|
|
20 - 29
|
389
|
5
|
384
|
2
|
1
|
0
|
1
|
1
|
0
|
0
|
1.29
|
0.43
|
|
30 - 39
|
784
|
11
|
773
|
6
|
4
|
1
|
0
|
0
|
0
|
0
|
1.40
|
0.33
|
|
40 - 49
|
842
|
23
|
819
|
10
|
8
|
3
|
0
|
2
|
0
|
0
|
2.73
|
1.04
|
|
50 - 59
|
912
|
19
|
893
|
8
|
8
|
3
|
0
|
0
|
0
|
0
|
2.08
|
1.69
|
|
60 - 69
|
1164
|
29
|
1135
|
18
|
5
|
2
|
1
|
3
|
0
|
0
|
2.49
|
1.68
|
|
70 - 79
|
638
|
19
|
619
|
11
|
4
|
2
|
2
|
0
|
0
|
0
|
2.98
|
2.39
|
|
80 - 89
|
162
|
5
|
157
|
1
|
0
|
2
|
0
|
0
|
1
|
1
|
3.09
|
5.62
|
|
90 - 99
|
3
|
0
|
3
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
Total
|
5797
|
125
|
5672
|
63
|
37
|
13
|
4
|
6
|
1
|
1
|
2.16
|
0.68
|
- Note. aIFAT; Indirect fluorescent antibody test
- bAPI; Annual parasite index from 1999
- * It shows significant correlation between age group and IFAT positivity rate of IFAT (P = 0.03) (except age group 90-99).
- §It shows significant correlation between age group and API (P = 0.003) (except age group 90-99).
