TABLE 4.
Quantitative culture results on duodenal aspirates preceding NEC in infants colonized with gram-negative organisms and mean log count of indistinguishable Enterobacteriaceae from infants without NEC
| NEC stage | Days from sample to clinical NEC | Duodenal aspirate quantitative culture results (log10 CFU/g) | REP-PCR/PFGE typesa | No. of non-NEC infants with same REP/PFGE type | Gram-negative organisms (mean log10 CFU/g)b |
|---|---|---|---|---|---|
| III | Same day | E. coli (5.96) | A′/3 | 2 | 5.70 (n = 3) |
| Enterococcus spp. (5.88) | |||||
| I | 1 | E. coli (5.44) | A/2 | 7 | 6.18 (n = 24) |
| Enterococcus spp. (3.46) | |||||
| 2 | E. coli (3.63) | A′/3 | 2 | 5.70 (n = 3) | |
| S. aureus (4.77) | |||||
| 1 | K. oxytoca (5.58) | Y/12 | 0 | ||
| CONS (4.34) | |||||
| 9 | K. oxytoca (1.77) | Y/12 | 0 | ||
| CONS (2.37) | |||||
| 2 | Enterobacter cloacae (2.29) | F/3 | 1 | 2.19 (n = 1) | |
| 8 | K. pneumoniae (2.79) | A/1 | 1 | 3.63 (n = 1) | |
| Enterobacter spp. (3.26) | no patt/5 | 0 | |||
| S. liquefaciens (2.54) |