Table 1.
Results from nasal swab culture and confocal laser scanning microscopy (CLSM) of tissue sections
| S. aureus carriage status in the Tromsø 6 studya (n = 39) | Presence of S. aureus by one nasal swab sampling present studyc (n = 39) | Presence of S. aureus by CLSM present studyd (n = 39) | ||
|---|---|---|---|---|
| Persistent carriers (n = 18) | + | 14 | + | 10 |
| − | 3 | |||
| nd | 1 | |||
| − | 4 | + | 0 | |
| − | 4 | |||
| nd | 0 | |||
| Othersb (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