Journal article
Incidence, Diversity, and Molecular Epidemiology of Sapoviruses in Swine across Europe
Section for Veterinary Diagnostics, Division of Veterinary Diagnostics and Research, National Veterinary Institute, Technical University of Denmark1
Division of Veterinary Diagnostics and Research, National Veterinary Institute, Technical University of Denmark2
National Veterinary Institute, Technical University of Denmark3
Virology, Division of Veterinary Diagnostics and Research, National Veterinary Institute, Technical University of Denmark4
Porcine sapovirus is an enteric calicivirus in domestic pigs that belons to the family Caliciviridae. Some porcine sapoviruses are genetically related to human caliciviruses, which has raised public health concerns over animal reservoirs and potential cross-species transmission of sapoviruses. We report on the incidence, genetic diversity and molecular epidemiology of sapoviruses detected in domestic pigs in a comprehensive study conducted in six European countries (Denmark, Finland, Hungary, Italy, Slovenia and Spain) between 2004 and 2007.
A total of 1,050 swine fecal samples from 88 pig farms were collected and tested by reverse transcription-PCR for sapoviruses, and positive findings were confirmed by sequencing. Sapoviruses were detected in 80 (7.6%) samples collected on 39 (44.3%) farms and in every country. The highest prevalence was seen among piglets aged 2 to 8 weeks, and there was no significant difference in the proportion of sapovirus positive findings in healthy animals or animals with diarrhea in Spain and Denmark (the only countries where both healthy animals and animals with diarrhea were tested).
On the basis of the RNA polymerase region, highly heterogeneous populations of viruses representing six differential genogroups (genogroups III, VI, VII, and VIII, including potential new genogroups IX and X) were identified, with a predominance of genogroup GIII (50.6%). Genogroup VIII, found in five of the six countries, had the highest degree of homology (up to 66% at the amino acid level) to human sapovirus strains.
Sapoviruses are commonly circulating and endemic agents in swine herds throughout Europe. Highly heterogenous and potential new genogroups of sapoviruses were found in pigs; however, no "human-like" sapoviruses were detected.
Language: | English |
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Publisher: | American Society for Microbiology (ASM) |
Year: | 2010 |
Pages: | 363-368 |
ISSN: | 1098660x , 00951137 and 1070633x |
Types: | Journal article |
DOI: | 10.1128/JCM.01279-09 |
ORCIDs: | Larsen, Lars Erik and Hjulsager, Charlotte Kristiane |
Animals Caliciviridae Infections Cluster Analysis DNA-Directed RNA Polymerases Europe Feces Gastroenteritis Genetic Variation Genotype Incidence Molecular Epidemiology Molecular Sequence Data Phylogeny Prevalence Sapovirus Sequence Analysis, DNA Sequence Homology Swine Swine Diseases Viral Proteins