Phase 2, Multi-center, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety and Efficacy of EC-18 in Preventing the Progression of COVID-19 Infection to Severe Pneumonia or ARDS

Inclusion Criteria: * Subjects must meet all of the following criteria: 1. Male or female ≥18 years old 2. Subjects with confirmed diagnoses of pneumonia caused by COVID-19 from: * RT-PCR or Abbott ID Now COVID-19 test * Chest X-ray or computed tomography (CT) scan (findings of the increased opacity on a chest X-ray, ground-glass opacity indicative of pneumonia on CT, opinion on consolidation, etc.) 3. Those who can tolerate oral administration 4. Those who do not need oxygen therapy or only need low-flow oxygen (at least 4L/min) but not requiring high-flow oxygen (higher…