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Table 1 Clinical characteristics of the neonates affected

From: The first occurrence of a CTX-M ESBL-producing Escherichia coli outbreak mediated by mother to neonate transmission in an Irish neonatal intensive care unit

Neonate

Gestational age at birth (weeks)

Deliverya

ESBL Source

ESBL resistance mechanism

Days in NICU prior to positive result

Infected/colonised

Feedingb

Status at time of discharge from NICU

Repeat ESBL testing post outbreak

1

28 + 2

CS

Rectal

Unknown

46

Colonised

EBM

Alive

Not performed

2 (index case)

34 + 5

VD

Right buttock, right eye, urine, rectal

CTX-M

8

Infectedc

EBM

Alive

Not performed

3

36 + 3

CS

Rectal

CTX-M

8

Colonised

EBM

Alive

Not performed

4

36 + 3

CS

Rectal

CTX-M

8

Colonised

EBM

Alive

Not performed

5

35 + 4

CS

Rectal

CTX-M

7

Colonised

Formula

Alive

Not performed

6

30 + 6

VD

Rectal, urine

CTX-M

6

Infectedd

EBM

Alive

ESBL positive rectal swab September 2013

  1. aCS: caesarean section, VD: vaginal delivery
  2. bEBM: expressed breast milk
  3. cOphthalmic, skin/soft tissue infection
  4. dUrosepsis