. 2008 Aug 22;74(20):6178–6186. doi: 10.1128/AEM.00704-08

TABLE 4.

PCR detection of Sul^r determinants in isolates from periods A and H that displayed Sul^r upon susceptibility testing

Allele(s)	No. of resistant isolates (total n = 69)
Allele(s)	Period A (n = 44)	Period H (n = 25)
sul1^a	7	5
sul2^a	23	10
sul3^a	0	0
sul1 sul2^b	14	10

Single resistance.

Dual resistance.