That’s pretty much how it works. You start having symptoms and it can get worse. The key is to not let pneumonia set in. Vitamin D, Zinc and antibiotics.
Remdesivir was superior to placebo in shortening the time to recovery in adults hospitalized with Covid-19 and evidence of lower respiratory tract infection. (Funded by the National Institute of Allergy and Infectious Diseases and others; ACTT-1 ClinicalTrials.gov number, NCT04280705. opens in new tab.)