TABLE 3.
Comparison of MRU meningococcal PCR assays with USELAT
| PCR and result | No. of samples with the indicated result by the following assay
|
|||
|---|---|---|---|---|
| PCR |
N. meningitidis USELAT
|
|||
| B-E. coli KI positive | ACYW135 positive | USELAT negative | ||
| siaD positive for serotype B | 32 | 23 | 0 | 9 |
| siaD positive for serotype C | 24 | 0 | 21 | 3 |
| ctrA positive (siaD negative) | 21 | 7 | 5a | 9 |
| PCR negative (ctrA negative) | 48 | 1 | 4 | 43b |
a
Includes one sample positive for meningococcal serogroup Y by culture.
b
Includes three samples positive for meningococcal serogroup 29E by culture and one sample positive for S. pneumoniae by culture.