Why does influenza become more active with the onset of winter? 0 13

With the arrival of autumn, millions of waterfowl, which are carriers of avian influenza viruses, migrate to Southeast Asia for the winter.

Close interactions among these birds lead to an active exchange of genetic material, resulting in the emergence of new strains of avian influenza viruses.

Animals infected with both avian and human influenza simultaneously become carriers of new genetic variants, which enter the population of human influenza viruses. In cold conditions, viruses maintain their viability for a longer time, contributing to the widespread transmission of the infection.