1998c-566 2004n-982 acquiredimmunodeficiencysyndrome administration adverseeffects aids(disease)ininfants aids(disease)inpregnancy aids(disease)inwomen breastfeeding child childhood control decisionmaking diseasetransmission étatsunisd'amérique guideline gynecology healthandhygiene healthaspects hiv-1 hivinfections immunologicalaspects immunology infant infantnutritionalphysiologicalphenomena infants infections infectionsàvih infectious infectiousdiseasetransmission ininfancy massscreening maternalhealthservices medical nutrition obstetrics organization philosophy pregnancy pregnancycomplications prenataldiagnosis prevention préventionetcontrôle psychology transmission treatment unitedstates women