Bird flu spreads in Europe with a delay after warm autumn

[Collection]Bird flu is spreading fast in Europe but arrived later this year after a warm autumn delayed migration of wild birds, the main carriers of the virus that led to the death of millions of poultry in the past years, scientific agencies said on Thursday.Although highly pathogenic avian influenza (HPAI), commonly called bird flu, is harmless in food, its spread is a concern for governments and the poultry industry due to the devastation it can cause to flocks and a risk of human transmission.