Genetic diversity of Brazilian strains of porcine circovirus type 2 (PCV-2) revealed by analysis of the cap gene (ORF-2)

Genetic diversity of Brazilian strains of porcine circovirus type 2 (PCV-2) revealed by analysis... Porcine circovirus 2 (PCV-2) is associated with a broad range of syndromes. In this study, 19 of 870 samples from pigs from different Brazilian states were found to be positive for PCV-2 by polymerase chain reaction (PCR). A fragment of 700 nt of the cap gene (ORF-2) from the 19 PCV-2-positive samples were sequenced using three pairs of primers (Fa/Ra, Fb/Rb and Fc/Rc). Maximum parsimony genealogy with a heuristic algorithm using the 19 field strain studied here, 21 sequences from GenBank and PCV-1 as an out-group showed the existence of two major clusters (A and B) and the Brazilian strains segregating in both of them. PCV-2 was found in pigs with various clinical signs. No association between clusters of PCV-2 and different states or clinical signs were observed, demonstrating that the exact role of PCV-2 in porcine circovirus diseases (PCVD) in Brazil still needs to be clarified. These results contribute to the molecular characterization of PCV-2, which serve as a basis for the epimiology of PCV-2 infection. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Genetic diversity of Brazilian strains of porcine circovirus type 2 (PCV-2) revealed by analysis of the cap gene (ORF-2)

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Publisher
Springer-Verlag
Copyright
Copyright © 2007 by Springer-Verlag
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-007-0976-3
Publisher site
See Article on Publisher Site

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