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Table 1 Characteristics of the infants colonized by ESBL- E. coli and risk factors at admission and during the NICU stay

From: Outbreak of colonizations by extended-spectrum β-lactamase-producing Escherichia coli sequence type 131 in a neonatal intensive care unit, Italy

Infant

Date of admission

Gestational age, week / birth weight, g.

Type of delivery

Lengh of stay (days)

Days in unit prior to first positive rectal swab

Feeding type

Status at the discharge time

1

December 27b

27/1140

CD

88

78

mixed

alive

2

January 16

30/1110

CD

54

29

mixed

alive

3a

January 20

35/2420

CD

31

18

formula

transferred to a surgical ward

4

February 10

36/1970

CD

8

4

formula

alive

5

February 16

30/720

CD

121

27

mixed

alive

6

February 18

33/1910

CD

33

17

mixed

alive

7

February 19

34/2270

VD

16

16

breast milk

alive

8

February 22

38/2680

CD

16

13

formula

alive

9

February 22

31/1790

VD

22

20

formula

alive

10

February 23

37/1850

CD

12

12

mixed

alive

11

February 27

38/u.i.c

VD

11

8

formula

alive

12

March 9

35/3300

CD

25

18

formula

alive

13

March 19

40/3440

CD

3

1

formula

alive

14

April 17

41/3000

CD

30

19

mixed

alive

15

April 28

35/1840

CD

14

10

mixed

alive

  1. CD, cesarean delivery; VD, vaginal delivery; aindex case; b 2011; cunavailable information.