BioInfo

These recommendations contain the following updates:

Information regarding use of intravenous peramivir under an emergency use authorization

Information on availability of renal dosing for peramivir

Updated oseltamivir dosing instructions for children younger than 1 year of age based on weight

Antiviral treatment and chemoprophylaxis considerations for patients vaccinated with 2009 H1N1 and seasonal influenza vaccines

Guidance on early empiric antiviral treatment for patients with progressive or severe influenza-like illness, regardless of underlying medical conditions

Guidance on early empiric antiviral treatment patients with underlying medical conditions placing them at risk for complications

Clarification of treatment considerations for patients with illness longer than 48 hours

These recommendations focus on the use of antiviral medications for the treatment and chemoprophylaxis of influenza.  As of December 4, 2009, influenza A (H1N1) virus (2009 H1N1), is the strain responsible for >99% of influenza in the U.S. during the 2009-2010 influenza season.  For information about other influenza viruses refer to CDC's Website.  These recommendations were last updated on December 4, 2009, and will be updated periodically as new information becomes available.