We've been reporting on the politics of vaccine development and distribution in the US - and the climate of claim and counter-claim involving President Trump and his top scientists. In Bahrain, meanwhile, the Crown Prince has stepped forward in the country's clinical trials by volunteering as a participant.

Around 6,000 people are taking part in the phase III trials, conducted by Abu-Dhabi based G42 Healthcare using a vaccine developed by Sinopharm CNBG, the sixth-largest producer of vaccines in the world.

Volunteers, including Prince Salman bin Hamad Al Khalifa, are then monitored to study the production of antibodies.