Volume 20, Number 5—May 2014
Dispatch
Influenza A Subtype H3 Viruses in Feral Swine, United States, 2011–2012
Figure 1

Figure 1. Geographic distributions of seum samples from feral swine, United States, 2011–2012A) Of 1,989 samples tested by ELISA, 182 were positive (red) and 1,807 were negative (blue)B) The 76 samples (blue) were selected for hemagglutination-inhibition and microneutralization subtypingC) The distributions of feral swine (green) and domestic swine (orange) were also marked (A and C).
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