As shown in Table 4, the positivity rate of anti-CMV-IgM antibodies in patients with EBV reactivation (60.53%) was significantly greater than that in uninfected patients (25.75%), primary infection patients (45.45%), and past infection patients (29.04%) (a: p < 0.001; d: p = 0.016; c: p < 0.001). Here, CD40LG is linked to infection.