Prevalence of swine Torque teno virus in post-weaning multisystemic wasting syndrome (PMWS)-affected and non-PMWS-affected pigs in Spain

The Journal of General Virology
Tuija KekarainenJoaquim Segalés

Abstract

The present study was designed to investigate the prevalence of swine Torque teno virus (TTV) in post-weaning multisystemic wasting syndrome (PMWS)-affected and non-affected Spanish swine. Nested PCR (nPCR) assays to detect two distinct TTV genogroups were applied. A significantly higher prevalence of TTV infection was found in sera from PMWS-affected animals (97 %) than in sera from non-PMWS-affected animals (78 %). Whilst PMWS-affected pigs (91 %) were more likely to be infected with TTV from genogroup 2 than non-PMWS-affected swine (72 %), no such difference was observed with genogroup 1. Nucleotide sequences of nPCR products were 91-99 % identical between strains within a genogroup. In contrast, inter-genogroup sequence identities were 49-58 %. Phylogenetic analyses demonstrated that genogroups form different clusters without association with PMWS or porcine circovirus type 2 infection status of the animals. These results indicate a high prevalence of both swine TTV genogroups in Spain, being present more frequently in PMWS-affected animals than in non-PMWS-affected animals.

References

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Citations

Jan 4, 2013·Veterinary Research Communications·Raquel de Arruda LemeAmauri Alcindo Alfieri
Aug 31, 2013·Food and Environmental Virology·Jinhai HuangZhirong Li
Jul 14, 1999·Journal of Virological Methods·R LarochelleR Magar
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Jan 19, 2012·Transboundary and Emerging Diseases·T Kekarainen, J Segalés
Jan 10, 2012·Transboundary and Emerging Diseases·X J Meng
Apr 12, 2012·Journal of Virology·Yao-Wei HuangXiang-Jin Meng
Oct 23, 2012·Journal of Virology·Meng-meng WangGuang-zhi Tong
Nov 5, 2011·Virology Journal·Zhiwei WuYingshun Zhou
Mar 17, 2011·PloS One·Thais Fumaco TeixeiraPaulo Michel Roehe
Dec 5, 2013·PloS One·Zhicheng ZhangDingzhen Dai
Dec 3, 2008·American Journal of Veterinary Research·Steven KrakowkaJohn A Ellis
Dec 3, 2008·American Journal of Veterinary Research·Steven Krakowka, John A Ellis
Nov 4, 2015·Archives of Virology·Jianbo LiuChangming Liu
Jan 10, 2012·Veterinary Microbiology·Lavanya RammohanSheela Ramamoorthy
Oct 1, 2011·Virus Research·Tanja Opriessnig, Patrick G Halbur
May 3, 2011·Research in Veterinary Science·Giseli A RitterbuschJanice R Ciacci-Zanella
Jul 22, 2010·Veterinary Microbiology·M AramouniT Kekarainen

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