COVID-19 Reinfection RiskCOVID-19 Reinfection RiskModelrisk in South Africa.New model tracks COVID-19 reinfectionEpidemiologyAssessing COVID-19 Reinfection Risks in South AfricaA new model evaluates COVID-19 reinfection patterns and risks in South Africa.2025-10-17T14:56:30+00:00 ― 7 min read