Prevalence data from sources such as population surveys can be a useful complement to case based surveillance data for hepatitis B. Case-based surveillance has limitations as most diagnosed cases are chronic in nature and detection of cases depends largely on testing practices. Prevalence data can therefore contribute towards a fuller understanding of the epidemiology of hepatitis B.
This document provides an update on the safety of substances of human origin (SoHO) in relation to COVID-19. It reassesses the risk and proposes revised mitigation measures for preventing transmission through SoHO.
This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 16-22 July 2023 and includes updates on avian influenza, Echovirus 11, COVID-19, West Nile virus, poliomyelitis, and botulism.
The information contained in this fact sheet is intended for the purpose of general information and should not be used as a substitute for the individual expertise and judgement of healthcare professionals.