WHO guidelines for pharmacological management of pandemic (H1N1) 2009

The purpose of this document is to provide a basis for advice to clinicians on the use of the currently available antivirals for patients presenting with illness due to influenza virus infection as well the potential use of the medicines for chemoprophylaxis. This guidance expands on the recommendations published in May 2009 titled ʺClinical management of human infection with new influenza A (H1N1) virus: Initial guidanceʺ.