TABLE 1.

BSI incidence per 1,000 PD according to the annual 3-month survey, with epidemiological and strain characteristics

Yr	No. of PD	No. of patient admissions	BSI incidence per 1,000 PD according to the annual 3-month surveya
			S. aureus	MRSA	CMRSA	HA CMRSA	CA CMRSA	NORSA	HA NORSA	CA NORSA	MSSA	EMSSA	HA MSSA	CA MSSA	tst gene + MRSA	tst gene + MSSA	luk gene + MRSA	luk gene + MSSA	eta gene + MSSA
2002	604,850	89,959	0.202	0.055	0.046			0.008			0.147	0.015				NK		NK	NK
2003	662,555	86,530	0.178	0.047	0.047			0.006			0.125	0.023				NK		NK	NK
2004	729,013	81,867	0.167	0.059	0.045			0.014			0.108	0.008				0.012			NK
2005	607,300	71,579	0.13	0.038	0.03	0.023	0.006	0.008	0.007	0.001	0.092	0.005	0.048	0.042		0.008			NK
2006	671,368	80,499	0.234	0.068	0.04	0.03	0.009	0.028	0.022	0.005	0.165	0.016	0.068	0.078	0.004	0.030		0.001	NK
2007	759,214	86,938	0.175	0.053	0.038	0.024	0.008	0.014	0.013	0.001	0.122	0.01	0.074	0.037	0.001	0.018	0.001		0.001
2008	759,261	86,876	0.209	0.058	0.029	0.018	0.008	0.029	0.018	0.008	0.151	0.01	0.086	0.056	0.005	0.024	0.001*	0.001	0.001

^aResults obtained before 2007 were described previously (26, 27) and are reported to show the changes through time affecting the different groups of strains. An incidence of 0.001 represents one BSI case. NK, not known; EMSSA, MSSA with resistance to FQs or at least two antimicrobial agents.