In a significant move, European healthcare regulator has endorsed using dexamethasone to treat COVID-19 patients needing oxygen therapy or mechanical ventilation.

The European Medicines Agency (EMA) said the drug could be an option to treat adults and adolescents with breathing difficulties, after concluding its review of results from a trial by British scientists.

The study by researchers at the University of Oxford showed in June that dexamethasone, commonly used against a range of inflammatory conditions, brought down death rates by about a third in severely ill, hospitalised COVID-19 patients.