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Volume 17, Number 6—June 2011

Dispatch

Characterization and Prevalence of a New Porcine Calicivirus in Swine, United States

Qiuhong WangComments to Author , Kelly Scheuer, Zhenwen Zhang, Wondwossen A. Gebreyes, Bayleyegn Z. Molla, Armando E. Hoet, and Linda J. Saif
Author affiliations: Author affiliations: The Ohio State University, Wooster, Ohio, USA (Q. Wang, K. Scheuer, Z. Zhang, L.J. Saif); The Ohio State University, Columbus, Ohio, USA (W.A. Gebreyes, B.Z. Molla, A.E. Hoet)

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Table 1

Prevalence of St-Valerien–like viruses in finisher swine farms in North Carolina, USA, 2009*

System code
Farm code
Barn treatment
Sampling month
No. individual samples
No. pooled samples
Barn level, no. positive/total (%)
Farm level, no. positive/total (%)†
BC1 BH Water Aug 48 10 4/10 (40.0) 8/40 (20.0)bc
BC1 BH BIO Aug 48 10 2/10 (20.0)
BC1 BH SYN Aug 48 10 0/10
BC1
BH
VIR
Aug
48
10
2/10 (20.0)
BC1 EW Water Jul 42 10 0/10 1/39 (2.6)c
BC1 EW BIO Jul 39 9 0/10
BC1 EW SYN Jul 47 10 1/10 (10.0)
BC1
EW
VIR
Jul
48
10
0/10
BC1 WL Water May 47 10 10/10 (100.0) 32/40 (80)a
BC1 WL BIO May 47 10 10/10 (100.0)
BC1 WL SYN May 46 10 2/10 (20.0)
BC1
WL
VIR
May
48
10
10/10 (100.0)
BC2 DC Water Nov 39 9 4/9 (44.4) 13/37 (35.1)b
BC2 DC BIO Nov 45 10 7/10 (70.0)
BC2 DC SYN Nov 35 8 2/8 (25.0)
BC2
DC
VIR
Nov
48
10
0/10
BC2 FF Water Oct 43 10 1/10 (10.0) 3/40 (7.5)c
BC2 FF BIO Oct 48 10 1/10 (10.0)
BC2 FF SYN Oct 40 10 0/10
BC2
FF
VIR
Oct
48
10
1/10 (10.0)
BC2 RW BIO May 45 10 0/10 2/30 (6.7)c
BC2 RW SYN May 48 10 2/10 (20.0)
BC2
RW
VIR
May
46
10
0/10
BC3 GO Water Nov 46 10 1/10 (10.0) 8/40 (20)bc
BC3 GO BIO Aug 45 10 1/10 (10.0)
BC3 GO SYN Nov 46 10 4/10 (40.0)
BC3
GO
VIR
Aug
46
10
2/10 (20.0)
BC3 TE Water Jul 47 10 4/10 (40.0) 12/39 (30.8)b
BC3 TE BIO Jul 38 9 2/9 (22.2)
BC3 TE SYN Jul 40 10 4/10 (40.0)
BC3
TE
VIR
Jul
47
10
2/10 (20.0)
BC3 TT Water Jul 42 10 1/10 (10.0) 3/39 (7.7)c
BC3 TT BIO May 45 10 0 /10
BC3 TT SYN Jul 38 9 2/9 (22.2)
BC3
TT
VIR
May
46
10
0/10
Total 1567 344 82/344 (23.8)

*BIO, Biosentry (Bisentry, Inc., Stone Mountain, GA, USA); SYN, Synergize (Preserve International, Reno, NV, USA; VIR, VirkonS (Dupont Animal Health Solutions, Sudbury, UK).
†Superscript letters indicate significance, i.e., values between farms labeled with different letters differed significantly, but values between farms labeled with the same letter did not differ significantly. p<0.05 by binomial proportion test.

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