The virus is widespread in the Americas and Africa regions, with several countries reporting cases in 2021. Chikungunya virus disease cases have also been reported in Asia during this period.
In collaboration with WHO Regional Office for Europe, ECDC monitors and reports on influenza activity in Europe on a weekly basis throughout the flu season.
In collaboration with WHO Regional Office for Europe, ECDC monitors and reports on influenza activity in Europe on a weekly basis throughout the flu season.