Plain text of figure 1 from: Dominguez BJ, Mays G, Hughes-Garza H, et al. Continuity of operations following a known feral boar exposure in a transitional swine facility. J Swine Health Prod. 2013;21(4):210–214
Figure 1: Timeline showing events after exposure of a group of replacement gilts to a feral boar that tested positive for antibodies to pseudorabies virus (PRV/ADV gB Ab Test; Idexx Laboratories, Westbrook, Maine). Gilts were housed in outdoor pens in a transitional swine facility in Texas. Sera from the 34 gilts in the pen breached by the feral boar, plus 40 gilts in an adjacent pen and two boars used for estrus detection, were screened for brucellosis (Brucellosis Card Test Kit; Becton/Dickinson Microbiology Systems, Cockeysville, Maryland) and for PRV by four tests: Semi-Automated Autolex Test (Viral Antigens Inc, Memphis, Tennessee), Latex Agglutination PRV Antibody Test Kit (Meridian Life Sciences, Memphis, Tennessee), PRV/ADV gB Ab Test (Idexx Laboratories, Westbrook, Maine), and the PRV/ADV g1 Ab Test (Idexx). PRV = pseudorabies virus; ADV = Aujeszky’s disease virus; Ab = antibody; Pos = positive; Neg = negative.
Day 0: First exposure to feral boar.Day 1: Boar re-appeared and was euthanized.
Day 17: 74 gilts and 2 boars screened for PRV and brucellosis.
- 3 gilts Pos on Autolex
- 1 of the 3 Pos on PRV/ADV gB test
- All Neg on PRV/ADV g1 test
- All Neg on Latex Agglutination PRV
- All Neg for brucellosis
Day 30: 74 gilts and 2 boars screened for PRV and Brucellosis.
Of the 3 gilts Pos on Day 17:
- 2 Pos on Autolex
- 2 Pos on PRV/ADV gB
- 1 Pos on PRV/ADV g1
All other gilts and both boars Neg for PRV.
All gilts and both boars Neg for brucellosis.
Day 40: Euthanized the 3 gilts that had any Pos test for PRV.Day 45: Regulatory investigation.
Day 72: Remaining animals tested Neg for PRV.Day 80: Hold order released. All animals cleared.