Geospatial and temporal associations of Getah virus circulation among pigs and horses around the perimeter of outbreaks in Japanese racehorses in 2014 and 2015

Table 2 Rates of seropositivity to Getah virus among pigs in north Chiba in autumn 2010–2015

Year		Sep.	Oct.	Nov.	Dec.	Total
2010	No. samples	2/68 (2.9%)^a	0/35 (0%)	0/15 (0%)	0/5 (0%)	2/123 (1.6%)
	No. batches	2/14	0/7	0/3	0/1	2/25
2011	No. samples	0/45 (0%)	0/27 (0%)	0/5 (0%)	0/34 (0%)	0/111 (0%)
	No. batches	0/9	0/6	0/1	0/7	0/23
2012	No. samples	0/10 (0%)	0/5 (0%)	0/29 (0%)	0/30 (0%)	0/74 (0%)
	No. batches	0/2	0/1	0/6	0/6	0/15
2013	No. samples	0/60 (0%)	6/40 (15.0%)	9/15 (60.0%)	4/20 (20.0%)	19/135 (14.1%)
	No. batches	0/12	3/8	2/3	1/4	6/27
2014	No. samples	0/10 (0%)	8/35 (22.9%)	-	-	8/45 (17.8%)
	No. batches	0/2	3/7	-	-	3/9
2015	No. samples	-	24/50 (48.0%)	-	-	24/50 (48.0%)
	No. batches	-	5/5	-	-	5/5

ISSN: 1746-6148