This page provides information about the estimated disease burden of COVID-19 and influenza, expressed in DALYs.Expressing disease burden in a single measure makes it possible to compare the loss of health caused by different diseases. Such comparison is important for prioritizing policies and resources for combating (infectious) diseases. A commonly used measure for disease burden is the disability-adjusted life year, or DALY. Disease burden in DALYs reflects the sum of healthy life years lost due to illness and disability (years lived with disability: YLD) and due to premature death (years of life lost: YLL). Detailed descriptions of the methods used can be found in a previous edition of the State of Infectious Diseases (in Dutch)(PDF). This page presents estimates of DALYs for COVID-19 and influenza. The disease burden of long-term effects after a SARS-CoV-2 infection, known as the 'post-COVID syndrome', is not included. A more extensive description of these two infectious diseases, as well as 35 other infectious diseases in the Netherlands, is published in the State of Infectious Diseases 2024 (in Dutch).