Table 4.

Details of EHV-1 strains, per year, disease type, and strain typing (ORF30 A2254G).

		Respiratory Syndrome		Abortion		Neurological Syndrome		ND 1
Year	Strains	A2254	G2254	A2254	G2254	A2254	G2254	A2254	G2254	No A/G Typing	Outbreaks (RESPE)
1 major outbreak 2009	30	24	0	2	2	0	2	0	0	0	/
2012	8	0	0	0	2	0	1	0	0	5 *	Missing data
2013	19	0	0	6	7	2	1	0	1	2 *	4
2014	10	0	0	8	0	0	0	0	0	2 *	26
2015	32	0	0	17	0	1	1	1	0	12 *	27
2016	18	1	0	8	0	2	4	0	1	2 *	32
2017	22	1	0	2	1	0	7	1	2	8 *	23
2018	71	9	4	17	1	10	2	5	11	12 *	56

Abbreviations: ND ¹= clinical form of disease not defined or reported. * Respiratory syndrome was assigned only if corresponding clinical information was submitted with nasal swab samples. / = for 2009, all EHV-1 strains included in this study were linked to the outbreak described in Section 3.1.