Why the study?
The high co-infection rate of Torque teno sus virus 1 and 2 in porcine circovirus type 3-positive pigs was not well characterized.
Cross-Sectional (n=132)
There is a high rate of co-infection of Torque teno sus viruses in PCV3-positive pigs, though no clinical signs were observed in PCV2-negative pigs.
In this study, the co-infection of Torque teno sus virus (TTSuV) and porcine circovirus type 3 (PCV3) was reported. One hundred and ten of 132 (83.3%) PCV3-positive samples were co-infected with Torque teno sus virus 1 (TTSuV1). Ninety-four of 132 (71.2%) PCV3-positive samples were co-infected with Torque teno sus virus 2 (TTSuV2). Sixty-six of 132 (50.0%) of PCV3-positive samples were co-infected with both TTSuV1 and TTSuV2. There were no clinical signs of infection in pigs that were both PCV3-positive and PCV2-negative, in either multiparous sows or live-born infants. The high co-infection rate provides valuable information for the further study of the pathological correlation between PCV3 and TTSuVs.
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Zheng et al. (2017) conducted a cross-sectional in Porcine circovirus type 3 (PCV3) infection (n=132). Torque teno sus virus (TTSuV) co-infection was evaluated on Co-infection with TTSuV1 and/or TTSuV2.
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