CD4 and mitochondrial DNA depletion syndrome 4a: Assessmentof these factors may help to identify HIV-infected pregnant women withAHD and thus, prioritize case management and prevention of disease progression.The fact that women with CD4<200 cellcounts at the first ANC visit had a lower risk of “less than expected improvement in CD4 cellcounts” six months later could be explained by the fact that womenidentified with AHD may be more closely monitored compared with those without it,which might improve adherence to ART.