Correlations between proportions of CD4⁺ T cell and CD8⁺ T cell in male and female of healthy crew (HC male (A) (n=7) and HC female (B) (n=14)), common viral CAP patients (VP-male (C) (n=30) and VP-female (D) (n=24) and the COVID-19 cases (nCoV-male (E) (n=13) and nCoV-female (F) (n=23)). P-values (two-sided) and r values were based on Spearman’s rank test.