The prevalence of tuberculosis in patients with CD4 counts of less than 100 cells per μL was 26·4% (95% CI 19·3–34·5), with less than 200 cells per μL was 19·5% (95% CI 15·4–24·1), and 200 or more cells per μL was 13·3% (95% CI 8·9–18·9). Here, CD4 is linked to tuberculosis.