The HIV & Infant Feeding Question and Answer Guide is intended as a reference tool to provide health workers with information concerning updated international guidelines related to HIV and infant feeding. Health workers can refer to the Guide to explain the complicated and difficult issues related to HIV and infant feeding, provide information and support to help prevent HIV transmission from women to their children, and increase the safety of all infant feeding options, including exclusive breastfeeding, commercial formulas, modified cows' milk, and expressed and heat-treated breast milk. It gives easy-to-understand answers to some of the most common questions that mothers, their families, and communities ask about HIV and infant feeding. The Q&A Guide is based on a generic UNICEF PMTCT infant feeding counseling tool and on the content of the WHO/UNICEF HIV and Infant Feeding Counseling Tools.