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 ECDC Communicable Disease Threats Report (CDTR) covers the period 5 -12 September, and includes updates on Ebola, influenza A (H9N2) and A(H5), overview of respiratory virus epidemiology in the EU/EEA, West Nile virus, Crimean-Congo haemorrhagic fever, dengue, chikungunya, and vibrio.