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Volume 23, Number 2—February 2017

Research

Swine Influenza Virus (H1N2) Characterization and Transmission in Ferrets, Chile

Nicolás Bravo-Vasquez1, Erik A. Karlsson1, Pedro Jimenez-Bluhm, Victoria Meliopoulos, Bryan Kaplan, Shauna Marvin, Valerie Cortez, Pamela Freiden, Melinda A. Beck, and Stacey Schultz-Cherry2Comments to Author 
Author affiliations: University of Chile, Santiago, Chile (N. Bravo-Vasquez, C. Hamilton-West); St. Jude Children’s Research Hospital, Memphis, Tennessee, USA (E.A. Karlsson, P. Jimenez-Bluhm, V. Meliopoulos, B. Kaplan, S. Marvin, V. Cortez, P. Freiden, S. Schultz-Cherry); University of North Carolina, Chapel Hill, North Carolina, USA (M.A. Beck)

Main Article

Figure 3

Testing for influenza in swine from backyard production farms (BPFs) in Central Chile. Swine serum samples collected from BPFs were analyzed for antibodies against influenza by nucleoprotein (NP)–specific ELISA, and hemagglutination inhibition analysis of serum samples from NP ELISA–positive farms was conducted to determine subtype. A) Results of influenza testing by BPF location. Red circles indicate location of positive farms, and gray circles indicate location of negative farms. B) Pie charts

Figure 3. Testing for influenza in swine from backyard production farms (BPFs) in Central Chile. Swine serum samples collected from BPFs were analyzed for antibodies against influenza by nucleoprotein (NP)–specific ELISA, and hemagglutination inhibition analysis of serum samples from NP ELISA–positive farms was conducted to determine subtype. A) Results of influenza testing by BPF location. Red circles indicate location of positive farms, and gray circles indicate location of negative farms. B) Pie charts showing percentage of swine at each sampling site seropositive for each virus type: sw/Chile (red), CA/09 (yellow), sw/IA (green), and sw/NC (blue). Red star indicates location of sw/Chile H1N2 virus isolate. Insets indicate region of Central Chile covered by this study.

Main Article

1These first authors contributed equally to this article.

2These senior authors contributed equally to this article.

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