On Day 1 (D1), median lymphocyte levels were slightly higher in the “COVID-19” group (Median = 660 cells/μL) compared to the bacterial sepsis group (Median = 580 cells/μL), but the difference did not reach statistical significance (U = 796.000, Z = −1.007, p = 0.314) ( Table 4 ).
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By Day 7 (D7), the difference remained non-significant (U = 567.000, Z = −1.860, p = 0.063) ( Table 4 ), although the bacterial sepsis group showed a trend toward higher lymphocyte recovery compared to “COVID-19”.