4 Min Read PARIS (Reuters) - Avian influenza in Europe is now approaching levels last seen in 2016 with egg supply shrinking in Poland, one of the hardest hit countries due to the loss of laying hens, in a sign that the virus is starting to strain the poultry industry. FILE PHOTO: A worker sorts eggs at a chicken farm in Brudnice, central Poland January 21, 2013. REUTERS/Peter Andrews The disease, commonly called bird flu, has been found in several European countries, decimating flocks with bruising losses for farmers already hit hard by Covid-19. Asia is also experiencing outbreaks of the same highly pathogenic H5N8 strain as the livestock sector also reels from the deadly African Swine Fever epidemic.