At present, studies recommend against the administration of corticosteroids in a SARS-CoV-2 infection, unless there is a clinical indication for other reasons (ARDS?). Evidenz has shown that there is an negative effect on virus clearance in SARS and MERS. However, this topic is highly controversial.
Critical care management of adults with community-acquired severe respiratory viral infection. Yaseen M Arabi et al, Intensive Care Med 2020.