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 10-16 March 2024 and includes updates on SARS-CoV-2 variant classification, avian influenza, measles, cholera, and overview of respiratory virus epidemiology in the EU/EE.