CD40LG and COVID-19: The pooled sensitivity of IgG, IgM, and TAB in RNA-positive COVID-19 cases was 0.76 (95%CI 0.65–0.86), 0.69 (95%CI 0.59–0.78), and 0.78 (95%CI 0.70–0.85) (Figure 3(B–D)), respectively.