IL9 and COVID-19: Huang et al8 noted that patients with COVID‐19 both in the ICU and not requiring the ICU demonstrated higher cytokine profiles compared with healthy adults, characterized by increased IL‐1β, IL‐2, IL‐7, IL‐8, IL‐9, IL‐10, IL‐17, GCSF, IP‐10, MCP‐1, MIP‐1α, TNF‐α, and some growth factors such as platelet‐derived growth factor and vascular endothelial growth factor (VEGF)8 (Table 1).