Communicable disease threats report, 6-12 December 2025, week 50

The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue of the CDTR covers the period 6-12 December 2025 and includes updates on respiratory virus epidemiology in the EU/EEA, measles, Middle East respiratory syndrome (MERS-CoV), West Nile virus, and Marburg virus disease (MVD).