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Abstract
Porcine parvoviruses (PPVs) are diverse and persistently evolving viruses found in domestic pigs and wild boars. Porcine parvovirus 1 (PPV1) causes reproductive problems in adult animals, although the veterinary relevance of PPV2, PPV3, and PPV4 has not been clarified. The detection and sequence analysis of PPVs circulating in wild boar populations in Serbia was performed to determine their phylogenetic relationships and prevalence in 122 organ samples collected during 2018. The DNA of PPV1, PPV2, and PPV3 was detected in 56.6% of the examined samples, whilst PPV4 was not identified. Overall, PPV3 was the most prevalent in 69.6% of the positive samples, followed by PPV1 in 63.8%, and PPV2 in 21.7% samples. Single infections were more common, although concurrent infections were confirmed in 34.8% samples for two, and 10.1% samples for three viruses. Sequence analysis of wild boar PPV1 showed no significant nucleotide differences from domestic pig PPV1 strains detected in Europe and the USA, however separate clustering from strains from China and the NADL-2 strain was demonstrated. Examination of the selected PPV2 sequences might suggest a certain geographical distribution of genetically diverse PPV2 strains considering high similarities to the strains from neighboring countries, and variability in comparison with other reported PPV2 sequences from different parts of the world. Wild boar PPV3 sequences clustered separately from most of the strains detected in wild boars, as well as the original porcine hokovirus strain. It is further noted that genetically different PPV3 strains circulate amongst Serbian domestic pigs and wild boars.
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Details
1 Department of Microbiology, Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
2 Institute of Meat Hygiene and Technology, Belgrade, Serbia
3 Virology Department, Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
4 Department of Infectious Animals Diseases and Diseases of Bees, Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
5 Department of Animal Husbandary, Faculty of Agriculture, University of Bijeljina, Bosnia and Herzegovina
6 Veterinary Specialized Institute „Kraljevo“, Kraljevo, Serbia
7 Veterinary Specialized Institute „Sombor“, Sombor, Serbia
8 Veterinary Specialized Institute “Pančevo”, Pančevo, Serbia