This year the outbreaks of avian influenza began in November, unlike in past years, in fact due to the extremely warm autumn the spread of the virus occurred late. The warm autumn delayed migration of wild birds, the main carriers of the virus that led to the death of millions of poultry. Despite indications of mammal-to-mammal transmission, no mammal-to-human transmission of the H5N1 virus in circulation in Europe has been observed.
December 14, 2023