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Table 3 Microbiologic characteristics of 65 patients with positive growth of blood cultures

From: The microbiological profile and presence of bloodstream infection influence mortality rates in necrotizing fasciitis

Variable

Single etiologic agent

(n= 61)

Multiple etiologic agents

(n= 4)

P-value

Gram-positive bacteria

   

Aerobic

   

Staphylococcus aureus

   

   Methicillin-susceptible S. aureus

9 (14.8)

1 (25.0)

0.496

   Methicillin-resistant S. aureus

7 (11.5)

-

-

Streptococcus

   

   Beta-hemolytic (Group A)

5 (8.2)

-

-

   Beta-hemolytic (Group B)

1 (1.6)

1 (25.0)

0.120

Anaerobic

   

   Peptostreptococcus

1 (1.6)

1 (25.0)

0.120

Gram negative bacteria

   

Aerobic

   

   Acinetobacter baumannii

2 (3.3)

-

-

   Aeromonas spp.

6 (9.8)

-

-

   Citrobacter spp.

1 (1.6)

-

-

   E.coli

3 (4.9)

2 (50.0)

0.027*

   Enterobacter spp.

1 (1.6)

1 (25.0)

0.120

   Klebsiella pneumoniae

2 (3.3)

1 (25.0)

0.176

   Proteus mirabillis

1 (1.6)

-

-

   Vibrio spp.

20 (32.8)

-

-

   Other gram negative rods

1 (1.6)

-

-

Anaerobic

   

   Prevotella spp.

1 (1.6)

-

-

   Bacteroides fragilis

-

1 (25.0)

-

  1. Data were summarized as n (%) for subjects with positive growth of blood culture (single etiologic agent or multiple etiologic agent).
  2. * P <0.05 denotes a significant difference between single, and multiple etiologic agents, P-values were derived through Fisher's exact test.
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