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Prevalence of group C rotaviruses in weaning and post-weaning pigs with enteritis
- Martella, V., Banyai, K., Lorusso, E., Bellacicco, A.L., Decaro, N., Camero, M., Bozzo, G., Moschidou, P., Arista, S., Pezzotti, G.
- Veterinary microbiology 2007 v.123 no.1-3 pp. 26-33
- disease prevalence, Rotavirus C, weaning, piglets, enteritis, weanlings, mixed infection, viral diseases of animals and humans, swine diseases, diarrhea, reverse transcriptase polymerase chain reaction, Rotavirus A, Caliciviridae, feces, complications, Italy
- Diarrheic fecal specimens collected from porcine herds were screened for the presence of group C rotaviruses using a reverse transcription-polymerase chain reaction (RT-PCR) assay. A total of 188 samples were tested and 54 were positive. When compiled these data with diagnostic results on group A rotaviruses and enteric caliciviruses we found that all but 5 group C rotavirus positive samples contained at least one additional virus. A subset of samples were subjected to nucleotide sequencing. The selected strains showed an unexpectedly wide range of nucleotide sequence heterogeneity (88.6-100%) to each other and to the reference porcine group C rotavirus strain, Cowden. The nucleotide sequence identity to the genuine bovine and human strains were, respectively, 86.8 and 87.2% or less. In conclusion, our study demonstrates that infection with group C rotavirus is frequent in Italian piggeries. The considerable rate of multiple infections requires further studies to investigate the pathogenic potential of group C rotaviruses in pigs, alone or in mixed infection, and raises challenges in the laboratory diagnosis of porcine enteric infections.