TABLE 2.

SeM gene types of isolates from vaccinated horses

SeM gene allele	Source	Outbreak no.	Isolate(s)	Date of isolationb	aroA gene PCR (bp)
1	Equilis StrepE vaccine	NAa	TW928	20/01/05	432
1	Cambridgeshire	21	8689	23/12/04	432
1	Berwickshire	4	0223	11/01/05	432
1	Berkshire	22	R, C	24/05/05	432
3	Berwickshire	4	199	8/01/05	1364
4	Berwickshire	4	0347	13/01/05	1364
7	Sussex	23	1974	11/03/05	1364
9	Cambridgeshire	21	0353, 0354	13/01/05	1364
9	Greater Manchester	24	1293	16/02/05	1364
9	Dorset	25	3081	19/04/05	1364
9	Surrey	26	3526	05/05/05	1364
10	Surrey	27	3679, 3680, 3682	10/05/05	1364

^aNA, not applicable.

^bDay/month/year.