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PBS News Hour
Vaccines developed with unprecedented speed amid setbacks
With the U.S. about to approve emergency use for Pfizer's vaccine, there have been some setbacks with others now being tested. Sanofi and GlaxoSmithKline said on Friday the launch of their vaccine will be delayed, and AstraZeneca announced confusing results for its potential vaccine. William Brangham spoke with Matthew Herper, a senior writer for STAT News, to learn more.
