Volume 18, Number 9—September 2012
Dispatch
Influenza A(H1N1)pdm09 Virus among Healthy Show Pigs, United States
Figure

Figure. . . . Show pigs with nasal swab specimens positive for influenza A virus by real-time reverse transcription PCR, Minnesota and South Dakota state fairs, 2009. MN, Minnesota; SD, South Dakota. White, total number of pigs swabbed; gray, pigs testing positive for influenza A by real-time reverse transcription PCR.
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