TABLE 1.
IAV surveillance in four types of U.S. swine shows
| Parameter | Result for show type |
||||
|---|---|---|---|---|---|
| Local jackpot | National/regional jackpot | State fair | County fair | All exhibitions | |
| Characteristics of shows | |||||
| Geographical restrictions | None | None | State | County | |
| Size (no. of pigs) | Small/medium | Large | Large | Small/medium | |
| Duration (days) | Short | Long | Long | Long | |
| Timing | Early summer | All yr | Late summer | All summer | |
| Sampling strategy | |||||
| No. of shows/fairs sampled | 4 | 6 | 5 | 98 | 113 |
| Time of sampling (mo) | May–Jun | Jan–Dec | Jul–Aug | Jun–Oct | Jan–Dec |
| Location of sampling (states) | OH | AZ, GA, IA, IL, KY | IA, IN, KY, OH, WV | IN, MI, OH | AZ, GA, IA, IL, IN, KY, MI, OH, WV |
| Total no. of samples collected | 594 | 2,106 | 1,012 | 1,992 | 5,704 |
| IAV detection | |||||
| PCR, % positive | |||||
| Shows | 100.0 | 100.0 | 80.0 | 42.9 | 49.6 |
| Samples in positive shows | 17.2 | 12.9 | 9.7 | 42.0 | 18.2 |
| Total samples | 17.2 | 12.9 | 9.5 | 17.9 | 14.5 |
| VI, % positive | |||||
| Shows | 100.0 | 83.3 | 80.0 | 32.7 | 39.8 |
| Samples in positive shows | 6.4 | 6.2 | 3.5 | 37.1 | 10.3 |
| Total samples | 6.2 | 6.4 | 3.5 | 12.1 | 7.8 |