Current BHIVA and WHO guidelines advocate that PLHIV should start cART when CD4 count drops below 350 cells/mm3 [16], [17]; other guidelines now suggest that cART can be started when CD4 counts drops below 500 cells/mm3 [18], while some practitioners have now started prescribing cART as soon as an individual has been diagnosed with HIV infection, irrespective of CD4 count [19]. Here, CD4 is linked to HIV infectious disease.