storm in the pulmonary tissue by releasing various types of mediators, leading to acute
respiratory distress syndrome (ARDS). Increased neutrophil‐to‐lymphocyte ratio, as well as
CD4+ T lymphopenia, is reported in cases with novel coronavirus disease (COVID‐19),
meanwhile, lymphopenia is a significant finding in the majority of COVID‐19 cases with a
severe phenotype. Moreover, excessive activation of monocyte/macrophage and cytokine …