Mehta and colleagues postulate that hyperinflammation in coronavirus disease 2019 (COVID-19) could be a driver of severity that is amenable to therapeutic targeting since retro-spective data have shown that systemic inflammation is associated with adverse outcome. However, correlation does not equal causation, and it is equally plausible that increased virus burden (secondary to failure of the immune response to control infection) drives inflammation and consequent severity (as shown for other viruses) rather than augmented inflammation being an inappropriate host response that requires correction.
