This issue of the Communicable Disease Threats Report (CDTR) covers the period 15-21 January 2023 and includes updates on COVID-19, diphtheriae, influenza, Mpox and Cholera.
As of week 48/2022, 24 737 detections had been reported. Of these detections, 93% were type A viruses, with A(H3N2) dominating (64%) over A(H1N1)pdm09 (36%), and 13% type B of which 321 were ascribed to a lineage, with all being B/Victoria.
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.
The 2021−2022 influenza season in the EU/EEA marked the return of influenza virus activity after a low-level circulation following the onset of the COVID-19 pandemic.