Communicable disease threats report, 25-30 April 2026, Week 18

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 25-30 April 2026, and includes updates on influenza, cholera, chikungunya virus disease, and an overview of respiratory virus epidemiology in the EU/EEA.