www.thelancet.com/action/showPdf?pii=S2213-2600%2821%2900160-0
“ We have shown that the inhaled glucocorticoid budesonide, given for a short duration, might be an effective treatment of early COVID-19 in adults. This effect, with a relative reduction of 91% of clinical deterioration is equivalent to the efficacy seen after the use of COVID-19 vaccines14 and greater than that reported in any treatments used in hospitalised patients and patients with severe COVID-19.”