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Volume 21, Number 1—January 2015
Dispatch

Oseltamivir-Resistant Influenza A(H1N1)pdm09 Viruses, United States, 2013–14

Margaret Okomo-Adhiambo, Alicia Fry, Su Su, Ha T. Nguyen, Anwar Abd Elal, Elizabeth Negron, Julie Hand, Rebecca J. Garten, John Barnes, Xu Xiyan, Julie M. Villanueva, Larisa GubarevaComments to Author , and 2013–14 US Influenza Antiviral Working Group
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (M. Okomo-Adhiambo, A.M. Fry, S. Su, H.T. Nguyen, A.A Elal, R.J. Garten, J. Barnes, X. Xiyan, J.M Villanueva, L.V. Gubareva); Atlanta Research and Education Foundation, Atlanta (S. Su); Battelle Memorial Institute, Atlanta (H.T. Nguyen, A.A. Elal); Pennsylvania Department of Health, Harrisburg, Pennsylvania, USA (E. Negron); Louisiana Office of Public Health, New Orleans, Louisiana, USA (J. Hand)

Main Article

Figure 1

Geographic distribution of oseltamivir-resistant influenza A(H1N1)pdm09 viruses, United States, 2013–14. Gray indicates the presence of an oseltamivir-resistant virus. Number of oseltamivir-resistant A(H1N1pdm)09 viruses divided by total number of viruses tested is shown for each state. Oseltamivir-resistant A(H1N1)pdm09 viruses were significantly more prevalent in Louisiana (LA) (p = 0.04, by Fischer 2-sided exact test), Pennsylvania (PA) (p<0.001), Mississippi (MS) (p = 0.02), Hawaii (HI) (

Figure 1. Geographic distribution of oseltamivir-resistant influenza A(H1N1)pdm09 viruses, United States, 2013–14. Gray indicates the presence of an oseltamivir-resistant virus. Number of oseltamivir-resistant A(H1N1pdm)09 viruses divided by total number of viruses tested is shown for each state. Oseltamivir-resistant A(H1N1)pdm09 viruses were significantly more prevalent in Louisiana (LA) (p = 0.04, by Fischer 2-sided exact test), Pennsylvania (PA) (p<0.001), Mississippi (MS) (p = 0.02), Hawaii (HI) (p = 0.02), and California (CA) (p = 0.03) than in all other states combined.

Main Article

1Members of the 2013–14 US Antiviral Working Group are listed at the end of this article.

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Page updated: December 19, 2014
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