Communicable disease threats report, 13-19 December 2025, week 51

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 CDTR covers the period 13-19 December 2025 and includes updates on respiratory virus epidemiology, SARS-CoV-2 variants, mpox, leprosy, Marburg virus disease, dengue, and chikungunya.