Avian Influenza Biosafety Advisory: Efficiently Transmissible Engineered Influenza A H5N1 Viruses OIE Biosafety Guidelines for Handling Pandemic H1N1 2009 Influenza Viruses in Veterinary Diagnostic Laboratories WHO Biorisk Assessment and Guidelines for the Production and Quality Control of Human Influenza Pandemic Vaccines WHO Instructions for Storage and Transport of Suspected or Confirmed Human and Animal Specimens and Virus Isolates of Pandemic (H1N1) 2009 WHO Laboratory Biorisk Management for Laboratories Handling Pandemic Influenza A (H1N1) 2009 Virus ΠΗΓΗ: www.internationalbiosafety.org