Current measures of adherence detect problems weeks to months after they occur. Because the HIV virus rapidly begins replicating and mutating in the absence of effective antiretroviral therapy, treatment failure may develop before an intervention can be deployed. Real-time objective adherence monitoring could redirect efforts from a reactive response to the proactive prevention of treatment failure. Because adherence is so closely associated with viral suppression, accurate adherence monitoring could also strategically limit viral monitoring only to those patients at a defined risk for viral rebound.

This observational study is assessing a wireless adherence monitoring device and mobile phone-based adherence data collection among caregivers of children under the age of ten years in Mbarara, Uganda. It involves both quantitative and qualitative measures of the feasibility and acceptability of these measures, as well as circumstances of adherence lapses and other individual and cultural factors affecting adherence. The qualitative data will be used to explore models of adherence behavior, which will likely include the child-caregiver dynamic, the child's mental and physical health, and social support mechanism.

See above.

Inclusion Criteria:

• age 1 to 10 years
• HIV-infected, meeting Ugandan criteria for antiretroviral therapy
• living within 30 km of Mbarara, Uganda

Exclusion Criteria:

• lack of mobile-phone reception

young children receiving HIV antiretroviral therapy in a rural African setting