ABSTRACT Introduction: Many countries in Africa are scaling up differentiated service
delivery (DSD) models for HIV treatment, but most existing data systems do not describe the
models in use. We surveyed organizations that were supporting DSD models in 2019 in
Malawi, South Africa, and Zambia to describe the diversity of DSD models being
implemented at that time. Methods: We interviewed DSD model implementing organizations
for descriptive information about each of the organization9s models of care. We described …