Since hydroxychloroquine is a low cost and safe anti-malaria drug that has proven effects against COVID-19 in vitro. The investigators aim to study the security and efficacy of this drug in trough a double blinded randomized clinical trial. Recruited patients with severe respiratory disease from COVID-19 will be randomized to an intervention group (400mg per day dose of hydroxychloroquine) and placebo. The investigators' main outcome will be all cause hospital mortality. The investigators hypothesize that a 400mg per day dose of hydroxychloroquine for 10 days will reduce all-cause hospital mortality in patients with severe respiratory COVID-19 disease. Results will be compared in an intention to treat analysis. All clinical, analysis and data team members will be blinded to treatment assignment.
Double blinded randomized clinical trial designed to evaluate the security and efficacy of hydroxychloroquine as treatment for COVID-19 severe respiratory disease. The investigators hypothesize that a 400mg per day dose of hydroxychloroquine for 10 days will reduce all-cause hospital mortality in patients with severe respiratory COVID-19 disease.