The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue of CDTR covers the period 15-21 February and includes updates on cholera, avian influenza A(H9N2) and A(H5N1), chikungunya, Ebola, Legionnaires’ disease, dengue, an unknown disease in DRC, and an overview of respiratory virus epidemiology in the EU/EEA.