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Table 1 Number of agricultural exhibitions with pigs testing positive for respiratory viruses by state

From: Assessing exhibition swine as potential disseminators of infectious disease through the detection of five respiratory pathogens at agricultural exhibitions

State Negative IAV PPIV1 PHEV PRRSv IDV
Ohio 20 13 15 12 6 1
Indiana 12 17 14 14 5 1
Michigan 8 5 1 0 1 0
West Virginia 1 0 0 0 0 0
Kentucky 0 1 1 1 0 0
Iowa 0 1 1 1 1 0
Total 41 37 32 28 13 2
  1. Individual swine nasal samples from 102 agricultural exhibitions across six states were tested for five respiratory viruses using real-time reverse transcription polymerase chain reaction. The number of swine exhibitions with ≥ 1 pig positive for each pathogen are shown by state. Out of the 102 exhibitions tested, at least one pathogen was detected in the pigs at 63 (61.8%). The pigs at 31 (30.4%) exhibitions were positive for more than one virus.
  2. IAV: influenza A virus, PPIV1: porcine parainfluenza virus 1, PHEV: porcine hemagglutinating encephalomyelitis, PRRSv: porcine reproductive and respiratory syndrome virus, IDV: influenza D virus.