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. 2009 Sep 25;141(3):258–267. doi: 10.1016/j.vetmic.2009.09.022

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Copyright © 2009 Elsevier B.V. All rights reserved.

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Fig. 3 — Comparison of the proportions of BVDV-1 subgroups isolated from PI animals diagnosed for epidemiological studies and independent of the health status (A) and from clinical cases (B). ^aAll cases of subgroups A, B, C and D where the viral genomic sequence was available.