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Volume 20, Number 9—September 2014
Research

Swine-to-Human Transmission of Influenza A(H3N2) Virus at Agricultural Fairs, Ohio, USA, 2012

Andrew S. BowmanComments to Author , Sarah W. Nelson, Shannon L. Page, Jacqueline M. Nolting, Mary L. Killian, Srinand Sreevatsan, and Richard D. Slemons
Author affiliations: The Ohio State University, Columbus, Ohio, USA (A.S. Bowman, S.W. Nelson, J.M. Nolting, R.D. Slemons); Ohio Department of Health, Columbus (S.L. Page); US Department of Agriculture National Veterinary Services Laboratories, Ames, Iowa, USA (M.L. Killian); University of Minnesota, Saint Paul, Minnesota, USA (S. Sreevatsan)

Main Article

Table 2

Genetic distances between influenza A(H3N2) viruses isolated from swine and humans at 10 agricultural fairs, Ohio, USA, 2012*

Fair
Fair A
Fair B
Fair C
Fair D
Fair E
Fair F
Fair G
Fair H
Fair I
Fair J
Fair A 4.00 3.38 3.51 6.74 5.59 5.30 7.76 5.00 7.10 7.42
Fair B 19.00 2.00 1.68 5.75 5.15 4.68 7.09 4.12 5.90 7.02
Fair C 17.50 6.00 1.00 6.03 4.48 4.09 6.81 3.84 5.50 6.63
Fair D 48.17 42.17 44.67 2.67 3.53 5.22 5.17 4.83 5.11 5.24
Fair E 48.17 42.17 44.67 31.33 35.33 3.13 3.11 3.47 3.17 3.43
Fair F 34.33 34.17 34.50 32.67 31.67 10.67 4.96 4.56 3.90 5.01
Fair G 53.83 47.83 50.33 33.00 25.00 38.33 2.67 5.43 5.22 1.46
Fair H 31.50 15.50 14.00 32.67 32.67 38.00 38.33 0.00 4.33 5.44
Fair I 47.83 41.83 44.33 27.00 26.00 14.33 32.67 32.33 2.67 5.35
Fair J 55.50 49.50 52.00 34.67 26.67 40.00 4.33 40.00 34.33 6.00

*Full-length concatenated genomes (13,133 nt positions) were used for comparisons. Mean numbers of base differences between isolates within each fair are shown on the highlighted diagonal; mean numbers of nucleotide differences between groups of isolates recovered from each fair are shown in the area below the diagonal. SE estimates, which were obtained by a bootstrap procedure using 1,000 replicates, for the between-group mean number of nucleotide differences are shown above the diagonal. Evolutionary analyses were conducted by using MEGA5.2.2 (http://www.megasoftware.net). Gray shading of mean numbers of nucleotide differences indicates higher percentage identity with darker shaded cells. Influenza A virus isolate names have been shortened to conserve space (OSU, indicates swine isolates; human isolates are identified by their unique number). Fair A, OSU50, OSU52; Fair B, OSU129, OSU138; Fair C, OSU175, OSU176; Fair D, OSU268, OSU293, 17; Fair E, OSU307, OSU420; 57; Fair F, OSU363, OSU370; 38; Fair G, OSU447, OSU450, 56; Fair H, OSU464, OSU467, 62; Fair I, OSU483, OSU484, 71; Fair J, OSU522, OSU527, 80.

Main Article

Page created: August 13, 2014
Page updated: August 13, 2014
Page reviewed: August 13, 2014
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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