Study procedures
viremia
VIREMIA
For the qualitative data collection for both studies, we conducted semi-structured in-depth interviews from December 2019 to December 2020 with six subgroups of key informants, including: (1) adolescent (ages 13 years and above) study participants for Opt4Kids, (2) caregivers of children enrolled in Opt4Kids, (3) women newly initiating ART during pregnancy in Opt4Mamas, (4) women already on ART with viremia at some point after enrollment in ANC in Opt4Mamas, (5) providers and other facility staff at our study sites, and (6) policymakers and other stakeholders at the local and national levels. Within the last two groups, we sampled individuals who worked in clinical care as well as in the laboratory section to ensure we had a wide breadth of perspectives. Study staff worked with the community partners and those attending community stakeholder meetings to help generate the initial pool of key informants for the key informant interviews (KIIs). We used convenience sampling to recruit patients already enrolled in the parent studies who came to the clinic during our interviewing period. Additionally, we utilized purposive sampling to recruit laboratory staff, facility staff, policymakers, and other stakeholders. Within each subgroup, we aimed to perform approximately 10–15 KIIs until saturation of themes was reached.Our interview guides were designed using a socioecological model of VS, [