TABLE 3.

Amino acid and codon changes in critical positions of the gyrA and parC QRDRs in S. suis^a

Strain	CIP MIC (μg/ml)	gyrA				parC
		Position 81		Position 85		Position 79		Position 83
		Codon	Aa	Codon	Aa	Codon	Aa	Codon	Aa
ATCC	0.5	AGT	Ser	GAA	Glu	TCC	Ser	GAT	Asp
BB1001	0.5	-	-	-	-	-	-	-	-
BB1002	0.5	-	-	-	-	-	-	-	-
BB1003	0.5	-	-	-	-	-	-	-	-
BB1004	0.5	-	-	-	-	-	-	-	-
BB1005	0.5	-	-	-	-	-	-	-	-
BB1006	2	-	-	-	-	TTC	Phe	-	-
BB1007	8	-	-	AAA	Lys	-	-	CAT	His
BB1008	64	TAT	Tyr	-	-	TAC	Tyr	-	-
BB1009	32	AAG	Lys	-	-	TAC	Tyr	-	-
BB1010	32	ATT	Ile	-	-	TAC	Tyr	-	-
BB1011	16	TTT	Phe	-	-	TAC	Tyr	-	-
BB1012	32	AAG	Lys	GAC	Asp	TAC	Tyr	-	-
BB1013	64	AAG	Lys	GAC	Asp	TAC	Tyr	-	-
BB1014	64	AAG	Lys	GAC	Asp	TAT	Tyr	-	-
BB1015	32	AAG	Lys	GAC	Asp	TAC	Tyr	-	-
BB1016	32	AAG	Lys	GAC	Asp	TAC	Tyr	-	-
BB1017	64	AAG	Lys	GAC	Asp	TAT	Tyr	-	-

^aCIP, ciprofloxacin. -, identical to the ATCC strain. Sequence differences are indicated in boldface. Aa, amino acid.