Table 3. Distribution of biotypes among S. aureus porcine isolates from the historical periods (1973–1974) and (1991–2003) and contemporary period (2004–2009) belonging to different sequence types (ST) or clonal complexes (CC).

Biotype	ST (spa types)	Time (n)
Human ecovar	ST8 (t008), ST12 (t156), ST2468/CC30 (t012)	1973–1974 (3)
Poultry ecovar	ST9 (t337), ST1092/CC9 (t526), ST1343/CC1343 (t213)	1973–1974 (5)
	ST9 (t337, t899)	2004–2009 (2)
Bovine ecovar	ST9 (t3446), ST97 (t2112)	1991–2003 (2)
	ST9 (t337, t899, t1334), ST9/CC9 (t2498)	2004–2009 (4)
Ovine ecovar	ST133 (t12057)	1991–2003 (1)
	ST398 (t011, t034, t571, t1254, t1255, t1793)	2004–2009 (23)
Biotype A	ST387/CC97 (t1236, t2112)	1973–1974 (3)
	ST1 (t127), ST97 (t2112)	1991–2003 (2)
	ST1 (t127)	2004–2009 (1)
Biotype B	ST1 (t127)	1973–1974 (1)
Biotype D	ST433/CC30 (t1333)	2004–2009 (1)
Biotype E	ST30 (t318)	1973–1974 (7)
	ST30 (t318), N.D./CC30 (t2840), ST433/CC30 (t1130, t1921, t3427)	1991–2003 (7)
	ST30/CC30 (t318), ST433/CC30 (t1333, t3427), ST398 (t034, t108, t567, t571, t899, t1255, t1730, t2876, t2922, t4838)	2004–2009 (7)
Not allotted	ST9 (t337)	1991–2003 (1)
	ST9 (t899)	2004–2009 (3)

N.D. ST unknown. The spa type was associated to CC30 on the basis of previous work [15], [29].