CD4 and infection: Using various tests, such as cross-tab tests, Mann–Whitney U tests, etc., only those with a value less than 0.2 were selected for binary regression, including those with a current CD4 + T-cell count less than 200, occupational level, reduced adherence to ART, WHO stages, etc. The results of the multivariable logistic regression model using forward conditional analysis revealed adjusted relationships between reduced adherence to ART, a CD4 + T-cell count less than 200, infection through sex, an RTI regimen, and age older than 40 years and virological failure (p value < 0.05) (Table 3).