AstraZeneca Defends Coronavirus Vaccine After Trial Error Erodes Confidence

Earlier this week, AstraZeneca and Oxford University announced their coronavirus vaccine worked in the majority of people who received it in trials. But now the company has admitted an error that is raising questions about the accuracy of the data.

Here & Now's Robin Young speaks with Ali Velshi, MSNBC anchor and economics correspondent, about what this means for the vaccine.