Questions swirl about the effectiveness of the AstraZeneca COVID-19 vaccine

Medical experts remain hopeful that the AstraZeneca vaccine will still be effective at preventing severe infections.
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Investors are assessing the implications of South Africa's decision to suspend its rollout of the drugmaker's coronavirus shot. What does that mean for global supply? Also, Cuba's opening up its economy to private businesses. And, the U.N.'s climate action envoy calls for more green investments.
The team
David Brancaccio
Host
Victoria Craig
Host, BBC
Stephen Ryan
Senior Producer, BBC
Jonathan Frewin
Producer, BBC
Daniel Shin
Producer
Jay Siebold
Technical Director
Brian Allison
Engineer
Meredith Garretson Morbey
Senior Producer
Erika Soderstrom
Producer
Rose Conlon
Producer
Alex Schroeder
Producer