Thank you very much. I can take the first stab at this, but I think it's likely a shared response.
I have been helping the WHO with the Solidarity trial. It's a trial that focuses on looking at medications for the treatment of patients with COVID-19 and isn't likely to engage vaccine testing. That's possible, but that's not part of the current layout of the trial. It's very much focused on treatments for patients who right now are hospitalized and sick with COVID.
I'll stop there and maybe turn it over, if you wish, to others working on the vaccine.