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 19-25 September, and includes updates on respiratory virus epidemiology in the EU/EEA, Ebola, ECDC expert deployment, West Nile Virus, Crimean-Congo haemorrhagic fever, dengue, chikungunya, and Vibrio risk in coastal waters.