TABLE 2.

Genotypes of outbreak strains defined by FAFLP analysis with EcoRI+0 and MseI+C primers

Strain	Source	FAFLP profile	Sizes of polymorphic AFa (bp)
11	Outbreak 1	A11						114	164	182	199	212		274				297	306		359
12	Outbreak 2	A12	66	74	87	108	112		164	182	199	212	215		275	276	285	297				366	390	525
13, 15	Outbreak 3	A13	66			108	112	114	164			212		274				297	306		359			525
14	Outbreak 3	A14	66			108		114	164	182		212		274				297	306		359			525
16, 17	Outbreak 4	A15	66	74		108	112	114	164					274		276		297			359			525
18	Outbreak 5	A16	66	74		108	112	114	164	182		212		274		276		297	306	310	359			525
19, 20	Outbreak 5	A17	66	74		108	112	114	164	182	199	212		274		276		297	306	310	359			525
21, 22	Outbreak 6	A18	66	74			112	114	164	182	199	212		274		276		297	306	310	359			525
23, 24	Outbreak 7	A19	66	74		108	112	114	164	182	199	212		274		276		297		310	359			525
25, 26, 27	Outbreak 8	A20	66	74		108	112	114	164	182		212		274		275					359			525
28	Outbreak 9	A21	66	74	87	108	112	114	164	182	199	212		274		276		297			359			525
29	Outbreak 9	A22b	66	74	87		112	114		182	199	212		274		276	285				359	366	390	525
30	Outbreak 9	A23	66	74	87	108		114		182	199	212		274		276		297			359			525

^aAFs are present in some strains and absent in others; a unique combination of AFs defines an outbreak genotype. 

^bFAFLP profile A22 (strain 29) was characterized by the presence of unique AFs of 134, 233, 250, 251, 252, 314, 372, 374, and 386 bp, in addition to the polymorphic fragments listed above, and the absence of AFs of 116 and 136 bp, which are present in all other isolates.