CD4 and meningeal tuberculosis: The counts of CD3<sup>+</sup> T, CD4<sup>+</sup> T, and B cells in the etiology (+) group were significantly lower than those in the etiology (-) group (<i>p</i> < 0.05).<h4>Conclusion</h4>The absolute counts of lymphocyte subsets in the peripheral blood of TBM patients were significantly decreased, especially in NK cells.