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Volume 24, Number 6—June 2018

Influenza D Virus Infection in Feral Swine Populations, United States

Lucas Ferguson1, Kaijian Luo1, Alicia K. Olivier, Fred L. CunninghamComments to Author , Sherry Blackmon, Katie Hanson-Dorr, Hailiang Sun2, John Baroch, Mark W. Lutman, Bianca Quade, William Epperson, Richard Webby, Thomas J. DeLiberto, and Xiu-Feng WanComments to Author 
Author affiliations: Mississippi State University, Starkville, Mississippi, USA (L. Ferguson, K. Luo, A.K. Olivier, S. Blackmon, H. Sun, B. Quade, W. Epperson, X.-F. Wan); South China Agricultural University, Guangzhou, China (K. Luo); US Department of Agriculture, Starkville (F.L. Cunningham, K. Hanson-Dorr); US Department of Agriculture, Fort Collins, Colorado, USA (J. Baroch, M.W. Lutman, T.J. DeLiberto); St. Jude Children’s Research Hospital, Memphis, Tennessee, USA (R. Webby)

Main Article

Table 1

Seroprevalence of influenza D virus among 256 feral swine, by state, United States, October 1, 2012–September 30, 2013*

State, no. samples D/13N
Total seropositive swine, no. (%)
Seropositive swine, no. (%) GMT (range) Seropositive swine, no. (%) GMT (range)
Hawaii, n = 73 11 (16.4) 53.4 (1:40–1:80) 4 (5.5) 67.3 (1:40–1:80) 15 (20.5)
North Carolina, n = 64 4 (6.3) 67.3 (1:40–1:160) 3 (4.7) 40 (1:40–1:40) 5 (7.8)
Oklahoma, n = 49 13 (26.5) 49.5 (1:40–1:80) 3 (6.1) 50.4 (1:40–1:80) 14 (28.6)
Texas, n = 70 10 (14.3) 85.7 (1:40–1:160) 8 (11.4) 63.5 (1:40–1:160) 15 (21.4)

*D/13N and D/46N were used in HAI assays with 0.5% turkey red blood cells. Seropositivity defined as HAI titer >1:40. D/13N, influenza D/bovine/C00013N/Mississippi/2014 virus; D/46N, influenza D/bovine/C00046N/Mississippi/2014 virus; GMT, geometric mean titer; HAI, hemagglutination inhibition.

Main Article

1These authors contributed equally to this article.

2Current affiliation: South China Agricultural University, Guangzhou, China.

Page created: May 17, 2018
Page updated: May 17, 2018
Page reviewed: May 17, 2018
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