TABLE 1.

Characteristics of 34 E. coli isolates shown in chronological ordera

Strain no., originSite of isolationDate of isolation (day/mo/yr)PFGE typeRAPD typePhylogenetic group
1, colonized neonateRectal swab24.03.09IαA
2, colonized neonateRectal swab25.03.09IαA
3, colonized neonateRectal swab31.03.09IαA
4, colonized neonateRectal swab31.03.09IαA
5, colonized neonateRectal swab7.04.09IαA
6, neonate with meningitisRectal swab7.04.09IαA
7, colonized neonateRectal swab7.04.09IαA
8, colonized neonateRectal swab7.04.09IαA
9, colonized neonateRectal swab7.04.09IαA
10, colonized neonateRectal swab7.04.09IαA
11, control patient 1Rectal swab7.04.09IIßD
12, colonized neonateRectal swab7.04.09IαA
13, neonate with meningitisCSF12.04.09IαA
14, neonate with meningitisBlood culture12.04.09IαA
15, colonized neonateRectal swab14.04.09IαA
16, colonized neonateRectal swab14.04.09IαA
17, colonized neonateRectal swab14.04.09IαA
18, colonized neonateRectal swab14.04.09IαA
19, colonized neonateRectal swab14.04.09IαA
20, colonized neonateRectal swab14.04.09IαA
21, colonized neonateRectal swab14.04.09IαA
22, colonized neonateRectal swab21.04.09IαA
23, colonized neonateRectal swab21.04.09IαA
24, colonized neonateRectal swab21.04.09IαA
25, colonized neonateRectal swab21.04.09IαA
26, colonized neonateRectal swab21.04.09IαA
27, colonized neonateRectal swab21.04.09IαA
28, colonized neonateRectal swab27.04.09IαA
29, colonized neonateRectal swab27.04.09IαA
30, mother's milk 1Milk sample28.04.09IαA
31, colonized neonateEye29.04.09IαA
32, mother's milk 2Milk sample11.05.09IαA
33, control patient 2Rectal swab13.05.09IIIγB2
34, control patient 3Rectal swab13.05.09IVδB2
  • a All isolates except the control strains (no. 11, 33, and 34) showed identical PFGE and RAPD types and belong to phylogenetic group A, as determined by the triplex PCR method.