CD4 and tuberculosis: In men and in women ≥40 years old, a slight increase was observed between the first and the second period (when ART eligibility criteria was also expanded to TB co-infected individuals with a CD4 count ≤350 cells/μL), but this increase in ART initiation percentages was most important between the second and the third entry period (when all individuals with a CD4 count ≤350 cells/μL became eligible for ART).