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 14-22 May 2026, and includes updates on hantavirus, chikungunya, Ebola disease outbreak, avian influenza, measles, and an overview of respiratory virus epidemiology in the EU/EEA.