Fig. 2From: Third-line antiretroviral therapy in Africa: effectiveness in a Southern African retrospective cohort studyCD4 count prior to start of salvage ART and at 6 months intervals on salvage ART. The graph shows the median and interquartile range for CD4 counts (for those patients who had CD4 count performed) prior to starting ART salvage, then at 6 months intervals on salvage ART (with a ±3 month window for each 6 month interval)Back to article page