Influenza-associated pulmonary aspergillosis (IAPA) presents a known risk to critically unwell patients with influenza [12–14] and the clinical course of COVID-19 shows many features that are shared with severe influenza infection. These include ARDS, lymphopenia, bilateral pulmonary infiltrates, systemic pro-inflammatory cytokine responses and sepsis leading to multiple organ failure [14, 15]. It is therefore reasonable to suspect that patients with severe COVID-19 may be similarly susceptible to invasive aspergillosis. Corticosteroid use is an important acquired immunological risk factor for IAPA [16] and, during the SARS-CoV 2003 epidemic, there were case reports of patients developing SARS-associated invasive aspergillosis after corticosteroid use [5]. Corticosteroid use has been reported in hospitalised patients with COVID-19 [1] and may further contribute to the risk of CAPA. Importantly, the recent finding by the UK RECOVERY trial (ISRCTN50189673) [17] of a one-third mortality reduction conferred by dexamethasone in ventilated patients with COVID-19, while leading to a crucial new therapeutic avenue, may increase the risk of patients acquiring CAPA and emphasises the need for enhanced fungal surveillance.