Table 4 Results of neutralization test with poliovirus type 1 strain CHAT and Poliovirus Type 1 Strain Sabin (LSc-2ab) in three different laboratories.
| Â | Laboratory Nr. 1 | Laboratory Nr. 2 | Laboratory Nr. 3 | ||||||
|---|---|---|---|---|---|---|---|---|---|
Case No. | CHAT ATTC VR-1562 | Sabin 1 WHO reference strain | Ratio* | CHAT ATTC VR-1562 | Sabin 1 WHO reference strain | Ratio | CHAT ATTC VR-1562 | Sabin 1 WHO reference strain | Ratio |
| Â | GMT** (IU/ml) | GMT (IU/ml) | Â | GMT IU/ml | GMT IU/ml | Â | GMT IU/ml | GMT IU/ml | Â |
7b | < 8 (< 1,1) | 91 (4,9) | > 4,5 | 12 (0,6) | 192 (4,1) | 7,1 | < 10 (< 1,3) | 80 (5,3) | > 4,1 |
9 | 8 (1,1) | 64 (3,4) | 3,1 | 32 (1,5) | 128 (2,7) | 1,8 | < 10 (< 1,3) | 40 (2,7) | > 2,0 |
12b | 23 (3,2) | 362 (19,5) | 6,1 | 64 (3,1) | 256 (5,5) | 1,8 | 10 (2,6) | 160 (10,6) | 4,1 |
13b | 32 (4,4) | > 786 (> 42,3) | > 9,4 | 48 (2,3) | > 512 (> 11) | > 4,7 | 20 (5,2) | 640 (42,4) | 8,2 |
28b | 32 (4,4) | 64 (3,4) | 0,8 | 96 (4,6) | 128 (2,7) | 0,6 | 20 (5,2) | 40 (2,7) | 0,5 |
16b | 64 (8,9) | 512 (27,5) | 3,1 | 128 (6,2) | 512 (11,0) | 1,8 | 20 (5,2) | 320 (21,2) | 4,1 |
21 | 128 17,8 | 2048 110,1 | 6,2 | 384 (18,6) | > 512 (> 11) | > 0,6 | 40 (10,4) | 1280 (84,8) | 8,2 |
8b | 256 (35,6) | 362 (19,5) | 0,5 | 512 (24,8) | 512 (11,0) | 0,4 | 80 (20,7) | 320 (21,2) | 1,0 |
34b | 256 (35,6) | > 786 (> 42,3) | > 1,9 | > 512 (> 25) | > 512 (> 11) | - | 80 (20,7) | 320 (21,2) | 1,0 |
Internal control | 41 (5,7) | 106 (5,7) | 1,0 | 62 (3) | 140 (3) | 1,0 | 22 (5,7) | 86 (5,7) | 1,0 |