Table 7.
Seroconversion rate in susceptible children after vaccination against rubella TAKAHASHI
| Strain | Pre vaccine HI Titer | No of children | Post vaccination | Titer Increase | ||
|---|---|---|---|---|---|---|
| Decrease | No change | |||||
| TAKAHASHI | 1:8* | 130 | 53 | 0 | 0 | 53(≤95%) |
| 1:16 | 25 | 0 | 1 | 24(96. %) | ||
| 1:32 | 20 | 3 | 0 | 17(85. %) | ||
| 1:64 | 15 | 2 | 0 | 13(86. %) | ||
| 1:128 | 12 | 2 | 0 | 10(83.33) | ||
| 1:256 | 5 | 1 | 3 | 1(20. %) | ||
| RA/27 | 1:8 | 130 | 53 | 0 | 0 | 58(≤95%) |
| 1:16 | 25 | 0 | 2 | 18(90%) | ||
| 1:32 | 20 | 2 | 4 | 14(70. %) | ||
| 1:64 | 15 | 1 | 2 | 12(80. %) | ||
| 1:128 | 12 | -- | 1 | 12(92.30) | ||
| 1:256 | 5 | 1 | 3 | 0(0. %) | ||
*Pre vaccine HI Titer in 76 seronegative cases increased to ≤ 1/8. Post-vaccination Rubella antibody increased to (≤95%) in all cases.