Communicable disease threats report, 14 - 20 March 2026 , week 12

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 - 20 March 2026 and includes updates on respiratory virus epidemiology in the EU/EEA, mass gathering monitoring, avian influenza, dengue, serious adverse events to IXCHIQ chikungunya virus disease vaccine, and invasive meningococcal disease.