HelicsWin.Net (also referred to as HWN) is a software application developed for the manual entry of data of the ECDC HAI-Net surveillance of healthcare-associated infections (HAIs).
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.