AmericaSpeaks TheVoiceOfJoyce London physicians are treating severely sick patients with a known steroid, Dexamethasone. I wonder, if used earlier in treatment, if the cytokine storm would be totally prevented along with a need for oxygen? Dexamethasone suppresses your immune responses. No single drug will prevent COVID-19, I’ve heard that an injectable 3 some may work. FYI , if scientifically inclined, tune in to Microbe TV to be informed.