CD4 and tuberculosis: Risk of becoming LTFU and death has also been attributed to a poor clinical status at ART initiation indicated by: a low CD4 count [14], [17], [18], [27], a low body mass index [14], [26], initiation of ART at World Health Organization (WHO) clinical stage 3 or 4 [12], [20], [25], [28], and/or tuberculosis (TB) co-infection [23].