Table 1 Rates of seropositivity to Getah virus among pigs in south Ibaraki in autumn 2012–2015

2012

No. samples

0/17 (0%)^a

-

1/47 (2.1%)

0/36 (0%)

1/100 (1.0%)

No. batches

0/2

-

1/4

0/2

1/8

2013

No. samples

0/25 (0%)

0/41 (0%)

0/26 (0%)

0/5 (0%)

0/97 (0%)

No. batches

0/2

0/4

0/2

0/1

0/9

2014

No. samples

6/30 (20.0%)

12/21 (57.1%)

1/15 (6.7%)

-

19/66 (28.8%)

No. batches

1/2

2/2

1/1

-

4/5

2015

No. samples

2/6 (33.3%)

53/83 (63.9%)

20/26 (76.9%)

2/2 (100.0%)

77/117 (65.0%)

No. batches

1/1

2/2

3/3

1/1

7/7