Communicable disease threats report, 1-7 November 2025, week 45

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 1-7 November 2025, and includes updates on respiratory virus epidemiology in the EU/EEA, SARS-CoV-2 variant classification, cholera, chikungunya, West Nile virus, dengue, Middle East respiratory syndrome (MERS), Cholera, Ebola, and Rift Valley Fever.