World Health Organization. Regional Office for Africa2020-06-092020-06-092020-06-09WHO/AF/ARD/DAK/04/2020https://iris.who.int/handle/10665/3323056 p.enCC BY-NC-SA 3.0 IGOhttps://creativecommons.org/licenses/by-nc-sa/3.0/igoPolicy BriefCOVID-19Oxygen Inhalation TherapyDisease ManagementHealth PolicyTreatment OutcomeEffectiveness of different forms of oxygen therapy for COVID-19 management: based on information as at 25 May 2020WHO Regional Office for Africa COVID-19 Rapid Policy Brief Series: Series 2: Covid-19 case management - intervention measuresTechnical Documentsprevention and controlWorld Health Organization