Clinical and microbiological characteristics of purulent and non-purulent cellulitis in hospitalized Taiwanese adults in the era of community-associated methicillin-resistant Staphylococcus aureus

Table 4 Microbiological diagnosis in non-purulent (n = 131) and purulent cellulitis (n = 80) cases

	All (n = 211)	Non-purulent group (n = 131)	Purulent group (n = 80)	P-value
β-Hemolytic streptococci (%)	96 (45.5)	92 (70.2)	4 (5.0)	<0.001
Staphylococcus aureus^a (%)	64 (30.3)	16 (12.2)	48 (60.0)	<0.001
MRSA^b (%)	32 (15.2)	8 (6.1)	24 (30.0)	<0.001
CA-MRSA^c (%)	22 (10.4)	5 (3.8)	17 (21.3)	0.681
GNB (%)	23 (10.9)	13 (9.9)	10 (12.5)	0.441
Polymicrobial pathogens (%)	21 (10.0)	6 (4.6)	15 (18.8)	0.001

Data are number (%) of patients, unless otherwise indicated
CA-MRSA community-associated methicillin-resistant Staphylococcus aureus, GNB Gram-negative bacilli
^aIncluding methicillin-susceptible S. aureus and methicillin-resistant S. aureus
^bIncluding CA-MRSA and non-CA-MRSA
^cDefined by epidemiological criteria [17–19], not by genotypic criteria

ISSN: 1471-2334