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 23-29 May 2026, and includes updates on SARS-CoV-2 variant classification, Ebola, Middle East respiratory syndrome (MERS), mpox, West Nile virus, Salmonella, Dermatophilus congolensis and malaria.