Characteristics of COVID-19 patients (cases and contacts) and usage of the WelTel text messaging service in Rwanda between March 18, 2020, and March 31, 2022.

Percentages are within group. A proxy is an individual who allowed another/other individual(s) (e.g., a non-phone owner) to register for WelTel using their phone number (e.g., a mother could be a proxy for her non-phone-owning daughter). Shared refers to the individuals using a proxy (e.g., the daughter).