Invasive Pulmonary Aspergillosis Complicating Influenza Infection

This prospective multicentre case-control registration study in Dutch and Belgian ICUs will assess the difference in incidence and outcome of invasive pulmonary aspergillosis (IPA) in ICU patients with severe influenza compared with influenza-negative control patients with severe community-acquired pneumonia during the coming three influenza seasons (2017-2020). The study will further assess the differences in clinical characteristics and risk factors between influenza patients with and without invasive aspergillosis. All consecutive patients aged 18 or older admitted to ICU during the inclusion period with respiratory distress due to influenza positive/negative community acquired pneumonia (CAP) will be included.