FILE PHOTO: An ampoule of Dexamethasone is seen during the coronavirus disease (COVID-19) outbreak in this picture illustration taken June 17, 2020. REUTERS/Yves Herman/File Photo
An ampoule of dexamethasone. Researchers say the corticosteroid, used to treat some infections and cancers, could be an effective treatment for Covid-19. Reuters

Coronavirus: Four Middle East states trialing breakthrough Covid-19 treatment