TABLE 3.
Distribution of fimbriae, serum resistance properties, and siderophores among Klebsiella spp. from natural surface waters and from clinical specimens
| Virulence factor | No. (%) of positive isolates
|
|||
|---|---|---|---|---|
| K. pneumoniae(n = 62) | K. oxytoca(n = 34) | K. planticola(n = 27) | Clinical K. pneumoniaea(n = 207) | |
| MSHA (type 1 fimbriae) | 54 (87) | 5 (15) | 16 (59) | 177 (86) |
| MR/K-HA (type 3 fimbriae) | 45 (73) | 18 (53) | 8 (30) | 145 (70) |
| Serum resistance | 7 (11) | 18 (53) | 1 (3.7) | 52 (25) |
| Production of: | ||||
| Enterobactin | 60 (97) | 33 (97) | 27 (100) | 205 (99) |
| Aerobactin | 0 (0) | 0 (0) | 0 (0) | 11 (5.3) |
| Mean cumulative no. of virulence factors per isolate | 2.7 | 2.2 | 1.9 | 2.9 |
a
Comparison group of clinical K. pneumoniae isolates. Data are from reference 15.