Meanwhile, following the latest disappointing remdesivir news, South Korean pharmaceutical firm Celltrion announced positive results from a pre-clinical study of a new antiviral treatment for COVID-19 on Monday, reporting a much-better-than-expected 100-fold reduction in viral load of the disease.

Unfortunately, these spectacular results were found in animal subjects, not humans, the Incheon-based company said. It plans to begin testing on human subjects in July.

Update (1415ET): Michigan Gov Gretchen Whitmer just lifted Michigan's stay at home order, easing limits on outdoor gatherings and allowing restaurants to reopen for dine-in service next week. Meanwhile, some businesses where close contact is common, including gyms, hair salons, indoor theaters and casinos, will remain closed for now. Day camps for kids can reopen June 8, according to local media reports.