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Fig. 2 | BMC Veterinary Research

Fig. 2

From: Antibody responses to porcine reproductive and respiratory syndrome virus, influenza A virus, and Mycoplasma hyopneumoniae from weaning to the end of the finisher stage in fourteen groups of pigs in Ontario, Canada

Fig. 2

Combination frequency of pigs that were seropositive for PRRSV at different stages of production. This figure displays pigs that were tested at 4 visits and were seropositive for porcine reproductive and respiratory syndrome virus (PRRSV) at least once throughout production. The data are presented as intersections for each combination of production stages in which pigs were seropositive, with seropositivity represented by dots in the horizontal axis. The number of seropositive pigs per intersection are displayed above the corresponding bar and arranged from the largest intersection to the smallest. Dots are connected by a line if pigs were seropositive at more than 1 production stage. For example, the largest number of pigs were seropositive for PRRSV only at weaning, followed by pigs that were only seropositive at the end of the finisher stage, etc.

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