PMID- 36061123 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220907 IS - 2297-1769 (Print) IS - 2297-1769 (Electronic) IS - 2297-1769 (Linking) VI - 9 DP - 2022 TI - Genetic and epidemic characteristics of porcine parvovirus 7 in the Fujian and Guangdong regions of southern China. PG - 949764 LID - 10.3389/fvets.2022.949764 [doi] LID - 949764 AB - Porcine parvovirus (PPV) is the primary cause of reproductive disorders in pigs. The porcine parvovirus 7 (PPV7) subtype was first identified in the United States in 2016. In this study, PPV7 was detected in different porcine samples, including serum, feces, saliva, and milk, from 69 pig farms in the Fujian and Guangdong regions of South China, and its coinfection with porcine circovirus 2 (PCV2), porcine circovirus 3 (PCV3), and porcine reproductive and respiratory syndrome virus (PRRSV) was determined. Whole-genome sequencing, phylogenetic analysis, and recombination analysis were performed on seven isolates, with each selected isolate originating from a different farm. There was a high rate of PPV7 positivity in blood, stool, and saliva but PPV7 DNA was absent from breast milk. The findings also showed that PPV7-positive samples had a high rate of coinfection with PCV2, PCV3, and PRRSV. Real-time PCR was used to determine the viral copy numbers of PCV2, PCV3, PRRSV, and PPV7 in serum samples and to assess whether PPV7 affected PCV2, PCV3, and PRRSV viral loads. Phylogenetic analysis showed that PPV7e and PPV7f were the most prevalent and widespread subtypes in the Fujian and Guangdong regions, respectively. While the PPV7a, PPV7b, PPV7c, and PPV7f subtypes were most prevalent in Fujian Province, PPV7a-e subtypes were prevalent in Guangdong, indicating that PPV7 has rich genetic diversity in these regions. A putative recombinant strain, 21FJ09, was identified using SimPlot and the Recombination Detection Program 4 software. CI - Copyright (c) 2022 Zhang, Zheng, Lv, Xue, Chen, Liu, Huang, Luo, Yang and Dai. FAU - Zhang, Xinjie AU - Zhang X AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Zheng, Canyang AU - Zheng C AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Lv, Zixin AU - Lv Z AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Xue, Shaohua AU - Xue S AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Chen, Yuxuan AU - Chen Y AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Liu, Yanru AU - Liu Y AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Huang, Xirong AU - Huang X AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Luo, Guoqing AU - Luo G AD - College of Life Sciences, Longyan University, Longyan, China. FAU - Yang, Xiaoyan AU - Yang X AD - College of Life Sciences, Longyan University, Longyan, China. AD - Fujian Engineering Research Center for Swine Disease Control and Prevention, Longyan, China. AD - Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan, China. FAU - Dai, Ailing AU - Dai A AD - College of Life Sciences, Longyan University, Longyan, China. AD - Fujian Engineering Research Center for Swine Disease Control and Prevention, Longyan, China. AD - Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan, China. LA - eng PT - Journal Article DEP - 20220817 PL - Switzerland TA - Front Vet Sci JT - Frontiers in veterinary science JID - 101666658 PMC - PMC9428481 OTO - NOTNLM OT - coinfections OT - genotype OT - molecular characterization OT - porcine parvovirus 7 OT - recombination COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/09/06 06:00 MHDA- 2022/09/06 06:01 PMCR- 2022/01/01 CRDT- 2022/09/05 04:03 PHST- 2022/05/21 00:00 [received] PHST- 2022/07/29 00:00 [accepted] PHST- 2022/09/05 04:03 [entrez] PHST- 2022/09/06 06:00 [pubmed] PHST- 2022/09/06 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fvets.2022.949764 [doi] PST - epublish SO - Front Vet Sci. 2022 Aug 17;9:949764. doi: 10.3389/fvets.2022.949764. eCollection 2022.