Mozambique has the eighth highest incidence of HIV in the world. Although the number of new infections has decreased since 2001, 14,000 children contract HIV every year. Throughout the country, access to care with treatment has been growing. However, it is estimated that only 27% of children who could benefit from antiretroviral treatment actually started treatment during 2012. The results of the studies will be used to better allocate future investments to treat HIV in the country and to ensure high quality care.