WHO 2016 Guideline Updates on HIV and Infant Feeding: The duration of breastfeeding and support from health services to improve feeding practices among mothers living with HIV:
“Mothers living with HIV should breastfeed for at least 12 months and may continue breastfeeding for up to 24 months or longer (similar to the general population) while being fully supported for ART adherence”: https://apps.who.int/iris/bitstream/handle/10665/246260/9789241549707-eng.pdf
*Not all countries have updated their Guidelines to the most recent WHO 2016 HIV and infant Feeding Guidance.