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 from 17-23 May 2020 and includes updates on COVID-19 and polio.

Source: https://www.ecdc.europa.eu/en/publications-data/communicable-disease-threats-report-17-23-may-2020-week-21