MMWR Vol. 58 / Dispatch

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Title: MMWR Vol. 58 / Dispatch

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	MMWR Dispatch Volume 58, Dispatch April 28, 2009

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Update: Drug Susceptibility of Swine-Origin Influenza A (H1N1) Viruses, April 2009
As of April 28, 2009, viruses from 13 (20%) of 64 patients in the United States infected with swine-origin influenza A (H1N1) virus (S-OIV) have been tested for resistance to antiviral medications. To date, all tested viruses are resistant to amantadine and rimantadine but are susceptible to oseltamivir and zanamivir. This report provides detailed information on the drug susceptibility of the newly detected S-OIVs, which will aid in making recommendations for treatment and prophylaxis for S-OIV infection and will contribute to antiviral-resistance monitoring and diagnostic test development.
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Department of Health and Human Services
Centers for Disease Control and Prevention

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