Table 1.
Rates of seropositivity to Getah virus among pigs in south Ibaraki in autumn 2012–2015
| Year | Sep. | Oct. | Nov. | Dec. | Total | |
|---|---|---|---|---|---|---|
| 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 |
aNo. of positive samples/No. of tested samples (positivity rate)