Communicable disease threats report, 23-29 January 2022, week 4

The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue covers the period 23-29 January 2022 and includes updates on COVID-19, Influenza, the Omicron variant, poliomyelitis and mass gathering monitoring for the Winter Olympic Games in Beijing.