Norway: Avian Influenza Detected Among Commercial Laying Hens in Western Norway

An investigation conducted by the Norwegian Veterinary Institute (NVI) has confirmed that the strain of avian influenza that was detected in a laying hen population in Klepp municipality in Rogaland (a county in Western Norway) on November 11, 2021, was a highly pathogenic variant, more specifically H5N1. This is the first time that highly pathogenic avian influenza has been detected in a commercial flock in Norway. This report summarizes the informational releases from the Norwegian national authorities on this detection.