This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 29 October - 4 November 2023 and includes updates on West Nile virus, the mass gatherings at the Rugby World Cup 2023 and the detection of Crimean-Congo haemorrhagic fever virus in ticks in southern France.
ECDC works to coordinate or support independent, post-marketing monitoring studies of effectiveness and safety of vaccines, and shall collect new information, use the relevant data collected by independent bodies, or both.