Short- and long-term immunological and virological outcome in HIV-infected infants according to the age at antiretroviral treatment initiation.

The clinical benefit of antiretroviral therapy in infants is established. In this cohort collaboration, we compare immunological and virological response to treatment started before or after 3 months of age. Early initiation provides a better short-term response, although evolution after 12 months of age is similar in both groups.