Localization of Staphylococcus aureus in tissue from the nasal vestibule in healthy carriers

BMC Microbiology

Table 1 Results from nasal swab culture and confocal laser scanning microscopy (CLSM) of tissue sections

S. aureus carriage status in the Tromsø 6 study^a (n = 39)	Presence of S. aureus by one nasal swab sampling present study^c (n = 39)		Presence of S. aureus by CLSM present study^d (n = 39)
Persistent carriers (n = 18)	+	14	+	10
			−	3
			nd	1
	−	4	+	0
			−	4
			nd	0
Others^b (n = 21)	+	2	+	0
			−	2
			nd	0
	−	19	+	3
			−	10
			nd	6

^aResults from nasal swabbing (two samplings with median time interval of 28 days) and spa-typing in the Tromsø 6 study in October 2007–August 2008. S. aureus carriage status as defined by van Belkum et al. [4]
^bIncludes both noncarriers and intermittent carriers
^cResults from one nasal swab sampling and spa-typing in the present study in 2010–2011; +, positive for S. aureus; −, negative for S. aureus
^dConfocal laser scanning microscopy (CLSM); +, positive for S. aureus; −, negative for S. aureus; nd, not determined, CLSM not performed

ISSN: 1471-2180