Doctor discusses Pfizer's COVID-19 vaccine
Emergency care physician Dr. Ron Elfenbein joined CBSN to discuss the latest announcement by Pfizer about its coronavirus vaccine. The company says testing shows its vaccine may be 90% effective.
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Emergency care physician Dr. Ron Elfenbein joined CBSN to discuss the latest announcement by Pfizer about its coronavirus vaccine. The company says testing shows its vaccine may be 90% effective.