Communicable disease threats report, 20 - 26 September 2025, week 39

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 20 - 26 September 2025 and includes updates on respiratory viruses, swine influenza, West Nile virus infection, dengue, chikungunya, Crimean-Congo haemorrhagic fever and Ebola.