TABLE 1.
Vaccine dose | Time (wk) after vaccine dose | OD units (mean ± SD)b
|
||||
---|---|---|---|---|---|---|
IgG | IgG1 | IgG2a | IgG2b | IgG3 | ||
First | 2 | 348 ± 273 | 183 ± 197 | 30 ± 20 | 33 ± 37 | 92 ± 73 |
4 | 1,365 ± 464 | 988 ± 290 | 57 ± 43 | 73 ± 16 | 367 ± 143 | |
Second | 2 | 27,332 ± 14,980 | 22,341 ± 10,983 | 217 ± 113 | 385 ± 322 | 2,111 ± 829 |
4 | 25,373 ± 9,477 | 23,805 ± 9,529 | 461 ± 217 | 288 ± 92 | 1,413 ± 393 | |
8 | 27,267 ± 13,358 | 19,620 ± 8,363 | 470 ± 412 | 274 ± 145 | 1,257 ± 494 | |
12 | 26,675 ± 11,290 | 21,136 ± 6,902 | 194 ± 134 | 215 ± 78 | 1,075 ± 483 | |
16 | 23,830 ± 13,527 | 21,756 ± 14,270 | 245 ± 179 | 318 ± 90 | 1,031 ± 450 | |
19 | 7,314 ± 4,801 | 6,387 ± 3,094 | 298 ± 163 | 20 ± 5 | 507 ± 163 | |
21 | 10,564 ± 6,439 | 11,896 ± 8,166 | 193 ± 84 | 20 ± 7 | 591 ± 266 | |
25 | 8,633 ± 3,723 | 7,740 ± 2,942 | 176 ± 188 | 15 ± 6 | 412 ± 267 |
Mice were immunized twice intranasally 4 weeks apart with B. melitensis LPS-GBOMP vaccine. Sera were collected at the times indicated for ELISA.
Data are for 10 animals at each time point. Negative control sera run simultaneously in these assays had titers of less than 1 OD unit.