| Sex (N=849) | Male | 442 (52%) | 
      
        | Female | 407 (48%) | 
      
        | Sex-ratio (male/female) | 1,1 | 
      
        | Age group (N=854) | [0-1] | 149 (17%) | 
      
        | [1-5] | 257 (30%) | 
      
        | [5-10] | 352 (41%) | 
      
        | [10-14] | 96 (11%) | 
      
        | Average time of monitoring | 20 ± 30 month |  | 
      
        | Circonstances of screening (N=321) | PMTCT | 112 (35%) | 
      
        | Clinical suspicion | 175 (55%) | 
      
        | Volontary test* | 34 (11%) | 
      
        | Type of HIV (N=623) | HIV1 | 621(99.7%) | 
      
        | HIV2 | 0 (0%) | 
      
        | HIV1+2 | 2 (0.3%) | 
      
        | WHO clinical stages (N=517) | Stage 1 | 149 (29%) | 
      
        | Stage 2 | 112 (22%) | 
      
        | Stage 3 | 184 (36%) | 
      
        | Stage 4 | 72 (14%) | 
      
        | T4 lymphocytes number (N=624) | Average for children 0-5 years | 635±528 | 
      
        | Average for children over 5 years | 312±275 | 
      
        | Therapeutic regimens (N=854) | D4T 3TC NVP | 528(61.8%) | 
      
        | AZT 3TC NVP | 251(29.4%) | 
      
        | AZT 3TC EFV | 25 (2.9%) | 
      
        | AZT 3TC ABC | 2 (0.2%) | 
      
        | ABC DDI LPV/r | 21 (2.5%) | 
      
        | ABC 3TC LPV/r | 1 (0.1%) | 
      
        | AZT 3TC LPV/r | 22 (2.6%) | 
      
        | TDF 3TC LPV/r | 4 (0.5%) | 
      
        | Repartition of children in cohorts | 2007 cohort | 103(12.1%) | 
      
        | 2008 cohort | 68 (8%) | 
      
        | 2009 cohort | 219(25.6%) | 
      
        | 2010 cohort | 293(34.3%) | 
      
        | Unknown HAART initiation date | 171 (20%) |