Which medications are used for the treatment of H1N1 influenza pneumonia?

Updated: Mar 24, 2021
  • Author: Zab Mosenifar, MD, FACP, FCCP; Chief Editor: John J Oppenheimer, MD  more...
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In the 2009-2010 H1N1 influenza epidemic, the US Centers for Disease Control and Prevention (CDC) recommended oseltamivir or zanamivir for treatment of all hospitalized patients with suspected or confirmed cases and for outpatients at increased risk for complications of H1N1 infection.

As of September 2009, only 28 of 10,000 H1N1 isolates tested were resistant to oseltamivir (11 from the United States), and all were susceptible to zanamivir.

Although intravenous peramivir had not been formally FDA approved for the treatment of influenza during the 2009-2010 H1N1 pandemic, the FDA issued an emergency use authorization (EUA) for its use in hospitalized patients who had potentially life-threatening suspected or laboratory confirmed infection with H1N1. Under the EUA, treatment with IV peramivir was approved for patients who had not responded to either oral or inhaled antiviral therapy and/or drug delivery by a route other than IV that was not expected to be dependable or feasible.

Early administration of corticosteroids in patients with H1N1 who are admitted to the ICU has no apparent benefit. [86]

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