This document can also be found on the official website of EClinicalMedicine published by The Lancet at: https://www.thelancet.com/journals/eclinm/. Using mathematical modeling EClinicalMedicine explores the impact of COVID-19 disruptions on HIV outcomes in South Africa, Malawi, Zimbabwe, and Uganda. This resource is part of the collection "COVID-19 and HIV/AIDS programmes and services". Collections are monitored daily and new content is added.