Age 1/20 1/40 1/80 1/160 1/320
0 – 5 14 13 28 286 138
6 – 10 17 21 25 73 53
11 – 15 13 24 22 79 25
16 – 20 09 34 28 52 21
21 – 25 03 58 34 143 62
26 – 30 10 11 31 39 45
31 – 35 12 04 03 12 18
36 – 40 16 43 29 41 22
41 – 45 19 09 53 09 08
46 – 50 34 26 91 06 46
51 – 55 00 24 11 15 10
56 – 60 00 15 29 13 63
61 – 65 12 00 03 22 26
66 – 70 03 05 24 14 39
TOTAL 162 287 411 804 576
Table 1: Reaction to different dilutions in tube agglutination method.