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Table 1 Description of E. sakazakii and E. cloacae strains used in this study

From: Virulence studies of Enterobacter sakazakiiisolates associated with a neonatal intensive care unit outbreak

Organism

Strain number

Neonate

Isolation site

Symptoms

Isolation date (day/mn/yr)

PFGE profile

E. sakazakii

696

D

Stools

NEC IIb

08/06/1994

1

E. sakazakii

701

F

Peritoneal fluid

NEC IIIb (died)

07/04/1994

2

E. sakazakii

767a

H

Trachea

Meningitis (died)

11/05/1994

2

E. sakazakii

709

C

Trachea

Septicaemia

12/05/1994

2

E. sakazakii

695a

J

Trachea

NEC II (died)

07/06/1994

2

E. sakazakii

693

Q

Stools

Asymptomatic

18/06/1994

3

E. sakazakii

716

 

Infant formula

 

11/07/1994

4

E. cloacae

766

R

Blood culture

Sepsis (died)

04/06/1994

NAc

  1. a Strains demonstrated extended spectrum β-lactamase activities.
  2. b NEC Stage II (definite NEC) is characterised by the systemic signs of temperature instability, apnoea, bradycardia, lethargy with additional symptoms of absence of bowel sounds, radiological signs of intestinal dilation, ileus and pneumatosis intestinalis. NEC Stage III (advanced NEC) is where the neonate is critically ill with metabolic acidosis, neutropenia, signs of generalised peritonitis, marked tenderness and distension of abdomen.
  3. c NA, Not appropriate