Table 2.
Survival and growth of N. meningitidis in whole blood using different anticoagulants.
| strain | SG | ST (cc) | BHI | Mg/EGTA | hirudin | heparin | citrate |
|---|---|---|---|---|---|---|---|
| α522 | B | ST-35 (cc35) | +++ | + | + | ++ | + |
| MC58 | B | ST-74 (cc32) | +++ | + | ++ | +++ | (−) |
| DE9686 | B | ST-42 (cc41/42) | +++ | ++ | ++ | +++ | (−) |
| α4 | B | ST-19 (cc18) | +++ | ++ | − | ++ | + |
| 8013 | C | ST-177 (cc18) | +++ | ++ | (−) | ++ | + |
| α14 | cnl | ST-53 (cc53) | +++ | + | − | − | − |
| MC58Δcsb | − | ST-74 (cc32) | +++ | + | − | − | − |
| N. lactamica 020-06 | − | ST-640 (cc640) | +++ | (−) | − | − | − |
SG, serogroup; ST, sequence type; cc, clonal complex; cnl, capsule null locus (no capsule). +++ more CFU/ml at 6 h than at 0 h (overall growth). ++ steady levels of CFU/ml or growth after initial decline. + survival until 6 h. (-) survival in less than ½ of individual experiments. - no survival at 6 h.