Table 1.

HPAI epidemic in Korea from 2003 to 2018.

Subtype	Year of	Clade	Date	Days of	Total number	Cases	No. of chicken	No. of duck	No. of other
	epidemic			epidemic	of Farms	per day	farms (%)	farms (%)	poultry farms (%)
H5N1	2003	2.5	10/12/2003–05/02/2004	58	18	0.310	7 (38.9)	11 (61.1)	0 (0.0)
	2006	2.2	25/11/2006–06/03/2007	103	7	0.068	4 (57.1)	2 (28.6)	1 (14.3)
	2008	2.3.2	01/04/2008–24/05/2008	54	98	1.815	80 (81.6)	17 (17.3)	1 (1.0)
	2010	2.3.2	29/12/2010–23/05/2011	146	91	0.623	38 (41.8)	50 (54.9)	3 (3.3)
H5N8	2014 1st	2.3.4.4	16/01/2014–29/07/2014	194	212	1.093	39 (18.4)	166 (78.3)	7 (3.3)
	2014 2nd	2.3.4.4	24/09/2014–10/06/2015	260	162	0.623	39 (24.1)	117 (72.2)	6 (3.7)
	2014 3rd	2.3.4.4	14/09/2015–15/11/2015	63	17	0.270	0 (0.0)	14 (82.4)	3 (17.6)
	2014 4th	2.3.4.4	23/03/2016–05/04/2016	14	2	0.143	0 (0.0)	2 (100.0)	0 (0.0)
	2016 1st	2.3.4.4	06/02/2017–14/04/2017	58	40	0.690	16 (40.0)	23 (57.5)	1 (2.5)
	2016 2nd	2.3.4.4	02/06/2017–19/06/2017	18	36	2.000	30 (83.3)	0 (0.0)	6 (16.7)
H5N6	2016	2.3.4.4	16/11/2016–18/02/2017	95	340	3.579	192 (56.5)	140 (41.2)	8 (2.4)
	2017	2.3.4.4	19/11/2017–18/03/2018	121	22	0.182	8 (36.4)	14 (63.6)	0 (0.0)