 - NOTE: Subjects who are managed with a NVP-based ARV therapy at the time of study enrollment will continue on NVP-based ARV therapy while receiving AL treatment. Children who have NOT met eligibility for ART according to national guidelines based on known available data at time of enrollment will be permitted to enroll in the study group of children receiving NO ARV drugs. For this study arm of NO ARV drugs, subjects must not be receiving any ARV drugs currently and they have must not have been on any ARV drugs for at least 4 weeks prior to entry. 