How is the AstraZeneca vaccine different, and is it safe? Yahoo News Explains

The U.S. has millions of doses of the AstraZeneca coronavirus vaccine, made by the British-Swedish drugmaker in collaboration with Oxford University, sitting in distribution centers. The company has not yet filed for authorization in the U.S.; recent reports suggest it could do so by the end of March. But what is the vaccine? And what is the controversy surrounding it in Europe? Yahoo News explains.

Video Transcript

{"iserror":true,"errors":{"file_processing":"The resource you selected is not complete"}}